1.   How does the puraDYN® bypass oil filtration system work?

In Stage One, oil enters the unit from a bypass oil pressure line, typically from the oil pressure sending unit or an oil galley plug near the full flow filter. The oil enters the puraDYN® system through a metering jet that limits the flow between 6 to 8 gallons per hour (22 to 30 liters per hour), into a 100% unbleached long-strand natural cotton fiber filled filter element. The solid contaminants, such as carbon, sludge, soot, varnish, dirt, silica, wear metal particles and other foreign matter, are trapped down to 1 micron in size.

In Stage Two the oil, free of solid contaminants, travels into the heated evaporation chamber flowing over a diffuser plate. The oil pressure has dissipated to atmospheric pressure causing the oil to flow in a thin film over the floor and walls of the heated evaporation chamber. The temperature in the evaporation chamber is approximately 200° F but may vary slightly depending on the outside ambient temperature. The heat causes liquid contaminants like fuel, water and engine coolant to vaporize and vent out under their own pressure through the vapor vent out through a vapor vent valve before they can re-condense as would normally occur in an engine not equipped with a puraDYN® system. The cleaned oil is then returned by gravity feed to the engine oil sump.

This continuous cleaning process safely extends oil change intervals, in most cases virtually eliminating them, while extending engine life and efficiency with resultant fuel consumption savings. <top>

2.   What is the difference between the puraDYN® system and a conventional oil filter?

Full flow filter rates can range between 60 to 1,000 gallons per hour, which is more like screening than filtering. The puraDYN® System has an ultra-fine filtration filter that filters oil at between 6 to 8 gallons per hour.  In order to achieve ultra-fine filtration it is necessary to pass the oil through the filter slowly.  Full flow filters strain out mostly large solid particles (15 microns or larger), leaving many smaller highly abrasive particles in the oil. The puraDYN® System filters solid contaminants down to 1 micron in size while evaporating liquid contaminants such as fuel, water and engine coolant in the electrically heated evaporation chamber. <top>

3.   Does the puraDYN® system remove solids more effectively than other filters?

Yes!  Most full flow and bypass filters use paper filter cartridges, and of those, only premium quality filters remove solid contaminants down to about 15 microns in size.  Most full flow filters can capture particulates in the range of 25 to 40 microns.  Commonly, paper is used as a full flow filter medium but it can quickly coat with particles, dirt, sludge and varnish.  There is far less filtering surface area in a full flow paper filter than in the puraDYN® System and as such, they have a definite tendency to clog and lose their efficiency quickly.  In the event that a full flow paper filter is heavily clogged, the filter's bypass valve should open, allowing unfiltered oil to flow through the engine.  Thus, the full flow oil filter can become ineffective in a relatively short period. <top>

4.   What are the cause and effect of dirty oil?

Dirty oil is created by the generation of solid and liquid contaminants from the engine combustion process, general oxidation and by outside contaminants entering the oil.

The combustion process will create water, carbon particles and sulfur oxides, which combined with the ingress of dirt, dust, acid and foreign matter enters the lubrication system through blow-by, forming sludge, varnish and acids, thereby adversely affecting the viscosity and lubricating properties of the oil.  It has been proven that filtering particles within oil down to 5 microns in size does not significantly reduce engine wear, whereas filtering down to 1 micron does significantly reduce engine wear.  The puraDYN® system does filter oil down to 1 micron.

All petroleum products contain some amount of natural sulfur.  In the engine combustion process, this sulfur becomes sulfur dioxide which enters the lubrication system through blow-by, and when mixed with water produces sulfuric acid. Sulfur dioxide also contaminates the oil from the fuel not consumed during the combustion process through blow-by past the piston rings. This acid builds up in the oil causing corrosion and pitting of metal surfaces, which in turn can lead to premature engine wear.

Leaky injectors and/or fuel not consumed by the engine combustion process are primary reasons for fuel in oil.  Water in the oil is a natural by-product of the engine combustion process and in addition, is caused by condensation.  Additionally, engine coolant can be introduced into the oil through leaking head gaskets.

Excessive fuel, water or engine coolant dilution will seriously impair the lubricating properties of oil. Water is the most damaging because it leads to the formation of corrosive acids and sludge.   Water can also cause up to an 80% loss of oil additives.  Fuel thins out the oil, impairing lubrication, which in turn can cause premature engine component wear.   Engine coolant causes corrosion and forms sludge.  The puraDYN® System removes nearly 100% of the water, fuel and engine coolant in the oil thereby maintaining viscosity and constantly keeping the oil clean.  <top>

5.   Doesn't normal engine heat evaporate most liquid contaminants?

Oil would not become contaminated with acids (generally caused by water joining with sulfur oxides) or have its viscosity altered by fuel dilution if engine heat alone could do the job of removing unwanted liquids. The puraDYN® System's evaporation chamber provides the necessary combination of controlled heat, low humidity, lack of pressure, and thin filming of oil to allow water, engine coolant and fuel to vaporize quickly and efficiently directly into the atmosphere before these liquids can re-condense, as would normally occur within an engine not equipped with the puraDYN® System. <top>

6.   Given that the puraDYN® system removes solid, liquid and dissolved contaminants, does it in any way prevent their formation in the first place?

Yes! This can best be described with the example of sulfuric acid.  Sulfur oxide is produced in the engine as a by-product of combustion.   Water is also formed as a by-product of combustion and occurs in the engine as condensation. If these two substances react in the heat and pressure of the engine, sulfuric acid will form.  Cotton in the puraDYN® system filter element acts to neutralize this acid by removing the sulfur oxide from the oil.   The puraDYN® system removes water and vents it to atmosphere as the oil passes through the heated evaporation chamber.  Prevention of sulfuric acid also contributes to longer oil additive life. <top>

7.   What type of oil should be used with the puraDYN® system?

Any high quality oil, including synthetic, with a Total Base Number (TBN) that meets or exceeds the specifications established or recommended by the engine manufacturer. <top>

8.   How will the puraDYN system affect oil additives contained in new oil?

Modern additives are mixed into the oil to combat contaminants generated by the combustion process and to prevent excess wear under a "normal engine load."  When the puraDYN® System is used, the contaminants are continuously removed down to 1 micron, and therefore fewer additives are depleted.  Some of these depleted additives are replenished whenever extra oil (due to leaks) is added to the engine or when make-up oil is added during normal puraDYN® system filter replacement.  The balance of the depleted additives are replenished by our patented standard filter with time-released additive pellets.  Laboratory and field tests have fully proven that the puraDYN® System will not filter out or use up oil additives.  The additives used in our standard filter with additives are compatible with all additives in use today and they will not alter the balance of the original additive package. <top>

9. Will the puraDYN® system work with the extended change interval synthetic oils?

Yes!   The puraDYN® System is completely compatible with synthetic oils. Although these oils provide superior lubrication versus mineral oils, they are still susceptible to solid contaminant buildup and liquid contamination, such as water and engine coolant from leaking gaskets or water from crankcase condensation, as well as fuel dilution and other foreign matter entering the oil. The puraDYN® System allows for the use of expensive synthetic oil in a more cost-effective manner through greatly extended oil drain intervals. <top>

10. Can the puraDYN® system be used on any engine?

The puraDYN® System can be installed on almost any engine such as automobile, truck, bus, boat, generator or any other type of industrial equipment with an engine or pressurized lubricating system. The puraDYN® System will work well with engines using any type of fuel such as diesel, gasoline, propane or natural gas.  It cannot be installed on engines without a pressurized lubrication system, such as 2-stroke outboard motors, where lubricating oil is mixed with the fuel. <top>

11. Does the color of the oil have any bearing on its lubrication ability?

No!  Detergent oil will turn very dark, almost black in color after it is heated. Non-detergent oil will turn a reddish brown after it is heated.  Most diesel engine lubrication oil will turn black in the first few minutes of operation due to the additive package in the oil and minute carbon particles.  The only accurate way to determine the oil's lubricating value or contamination level is through spectrographic oil analysis. <top>

12. Does the puraDYN® system reduce the amount of sludge typically found in engines?

Yes!  Although contaminants formed from engine wear and chemical reactions are initially extremely small, they tend to agglomerate (stick together) in suspension in the oil, increasing in size until they are large enough to fall out of suspension, forming layers of sludge and varnish.

The puraDYN® System captures and removes solid contaminants in the oil down to 1 micron in size, which prevents them from reaching a size at which they can fall out of suspension. <top>

13. Does the puraDYN® system help extend engine life and increase efficiency?

Yes!  The puraDYN® system will definitely extend engine life and efficiency. The primary factors that reduce engine life are corrosion and friction.  The more corrosion and friction present within the engine, the shorter its life. The puraDYN® System increases engine life by reducing friction and corrosion.   It does this by continuously cleaning the oil.  By only changing oil at regular intervals, an engine is subjected to a repeating cycle of clean oil becoming increasingly dirty because of steadily rising friction and corrosion levels.  Under best of conditions, one could expect the engine will be running on half-dirty oil all the time.  Some puraDYN® System users have reported their engine life has more than doubled.  Dry start wear, with metal to metal contact until pressurized oil is delivered, is responsible for up to 80% of the wear occurring within an engine.   Being able to keep the oil clean within an engine serves to increase its film strength, lubricity and adhesion ("cling factor"), which will decrease the wear affects of the "dry" or "cold start". <top>

14. Can the puraDYN® system be installed on a new engine before it is broken in?

Yes!  The puraDYN® System aids in the break-in period and ultimately contributes to longer engine life by removing the excessive break-in metal particles (1 micron or larger) that circulate through the engine during that time.  These particles are not usually trapped by the engine's full flow filter (15 microns or larger). If the engine comes with special break-in oil, follow the manufacturer's recommended oil change interval, after installing the puraDYN® System. <top>

15. Can engine manufacturers require oil changes in order honor their warranty?

No!  Engine oil change intervals are "recommended" by most manufacturers for warranty purposes.  Only the condition of the oil needs to meet minimum manufacturer specifications during the warranty period. The puraDYN® System insures that the oil continuously exceeds these minimum requirements.  Manufacturers should honor engine warranty claims as long as accurate and periodic oil analysis reports are taken at the manufacturer's recommended oil change intervals (or sooner) stating that the oil is suitable for continued use and that the additive and viscosity levels are deemed acceptable. <top>

16. Will installation of the puraDYN® system on my engine or other type of equipment affect the manufacturers warranty?

No!  The puraDYN® System continuously cleans the oil at a rate of 6 to 8 gallons per hour (22 to 30 liters), and works in conjunction with the normal full flow filter.  It helps to enhance the full flow filter's performance, greatly extending its life.  We have opinion letters from most major engine manufacturers (copies available upon request) that state the installation and use of a non-factory accessory, such as the puraDYN® System, does not in itself void the manufacturer's warranty. <top>

17. Can the puraDYN® system have any adverse effect on my engine?

No!  It must be remembered that the puraDYN® system is installed as an accessory to the engine oil lubrication system.   This is a bypass system, which means that the puraDYN® system is down stream of the full flow oil filter and it does not come between the oil pump and any moving part of the engine.  If the heating element fails and/or the pressure inlet hose screen becomes blocked for any reason, it would only result in the oil becoming gradually contaminated, as it would under normal engine operation without a puraDYN® system.  Frequent oil analysis would detect that this was occurring and corrective actions would be taken.  A properly installed puraDYN® system cannot obstruct the flow of oil to the engine's moving parts, lower oil pressure or harm the engine in any way. <top>

18. How often does the puraDYN® system filter have to be changed?

For an engine that is operating under normal conditions, we recommend that the puraDYN® system filter be replaced at the original equipment manufacturer (OEM) approved or stated oil drain interval.  Severe or harsh engine operating conditions will require more frequent filter element replacement.  In all cases, when replacing the puraDYN® system filter, an oil sample should be sent for analysis by a qualified laboratory to verify that the oil is good for continued use. <top>

19. Is it difficult to change the puraDYN® system filter?

No!  It should only take a few minutes.  On the TF models, loosen four nuts and swing studs down.  Move the head casting aside and remove the diffuser plate.  Remove and discard head casting rubber gasket.  Remove and discard the old filter and rubber o-ring.  Install the new filter.  Install the new rubber o-ring on top of the new filter.  Install the diffuser plate.  Install the new head gasket into the head casting.  Place the head casting over the diffuser plate, move swing studs up and equally tighten four nuts. 

On PFT models, using a 1/2" flex drive handle, loosen the lid by turning counterclockwise and remove.  Remove and discard the old filter.  Install new filter.  Install the lid and using a 1/2" flex drive handle, tighten lid turning clockwise. <top>

20. Once the puraDYN® system is installed on my engine or other type of equipment, how can I be sure that is purifying the oil?

By sending oil samples for analysis by a qualified laboratory on a regular basis you can verify that the oil is good for continued use.  Laboratory analysis is inexpensive, completely unbiased and typically provides the following information about the oil:

• Spectrochemical analysis indicating the amount of wear metals in parts per million
• Physical properties such as % of fuel, % of soot, % of solids, % of water and % glycol
• Total base number test (TBN - which measures the reserve alkalinity of the oil)
• Total acid number test (TAN - which measures the total acidity of the oil)
• Additive and viscosity levels.

By performing regular oil analysis one becomes increasingly confident that the puraDYN® system is satisfying their particular oil purification needs. <top>

21. How can I check if the puraDYN system is operating correctly?

While the engine is running at normal operating temperature, carefully touch the top of the TF product, or bottom of the PFT product, next to the heating element.  If the surface feels very hot to the touch, then the heating element is working.  On TF models you can verify return oil flow by looking at the flow meter sight glass.  On PFT models, carefully touch the return line hose near the bottom of the unit - it should feel warm to the touch.  As long as the heating element is working and oil flow is present, the puraDYN® system is continuously cleaning the oil. <top>

22. Is the puraDYN® system difficult to install on an engine?

No!  The puraDYN® System can be easily installed on almost any engine, both foreign and domestic, in 2 hours or less.  Detailed instructions for do-it-yourself installations are included with each unit or any qualified mechanic can easily perform the installation for you.   Also, puraDYN® Filter Technologies Inc. can train your fleet mechanics upon request. <top>

23. What are the major steps to installing a puraDYN® system on an engine?

• Find a suitable location on the vehicle that allows proper gravity return of the oil to the sump.

• Install the puraDYN® system using supplied mounting clamps and fasteners.

• Install fittings and connect a pressurized oil supply hose from the engine to the puraDYN® system.

• Install fittings and connect an oil return hose from the puraDYN® unit to the engine oil sump.

• Find an ignition 'run' power source and then make heating element electrical connections.

<top>

24. Will the puraDYN® system cause a noticeable drop in engine oil pressure?

No!  puraDYN® System is a bypass filtration unit that uses a pressurized tributary oil supply, downstream of the engine full flow filter that is subsequently reduced in both pressure and flow by our metering jet assembly.  As a result, the puraDYN® system will not change engine oil pressure, affect normal engine performance or full flow filter functionality. <top>

25. At what flow rate does the puraDYN system clean engine oil?

The puraDYN® system continuously cleans the oil at a flow rate of approximately 6 to 8 gallons per hour (22 to 30 liters) at 50 PSI (3.4 Bar), depending upon oil temperature and engine RPM. <top>

26. What are the features of the puraDYN® system's heating element?

The puraDYN® system heating element is constructed of non-corroding stainless steel.  The heating element is isolated in a sealed compartment and never comes in contact with the oil or potentially volatile fumes within the evaporation chamber.  The heating element is sealed to prevent fire, explosion and to keep out moisture. This quality component should operate more than 10 years. <top>

27. What should be done with the engine's full flow filter?

Change the engine full flow filter when installing the puraDYN® System. Thereafter, change the engine full flow filter every 12 months or 60,000 miles or 1,500 hours, whichever occurs first.  Note:  To take care of initial engine cleanup, the first puraDYN® system filter change will be at half the engine manufacturer's recommended full flow filter change interval.  The puraDYN® system captures and removes solid contaminants in the oil, down to 1 micron in size, which effectively extends engine full flow filter life.  However, extreme or harsh engine operating conditions may require more frequent changing of the engine full flow filter and puraDYN® system filter. <top>

28. Can the puraDYN® system physically take tough operating and weather conditions?

Yes!   puraDYN® systems are solidly designed, constructed of quality components, virtually indestructible, trouble-free, have no moving parts and require no servicing or adjusting. <top>

29. Can the puraDYN® system be used on other equipment besides diesel engines?

Yes!   The puraDYN® System can continuously purify the oil used in hydraulic equipment, automatic, compressors, generators and most other engines. <top>

30. Is the puraDYN® system guaranteed?

Yes!  The puraDYN® system has a five-year, unlimited mileage/unlimited hours warranty. We also have a six-month money-back performance guarantee.<top>

31. Will normal operating temperatures ultimately degrade the engine oil?

No!  The standards set for today's modern engine oils are of such that operating temperature of a properly functioning engine is considerably less than what is needed to cause oil degradation.   If engine oil is kept free of solid and liquid contaminants, which is exactly what the puraDYN® system is designed to do, then it is capable of long term extended use. <top>

32. Should I change existing oil when installing a puraDYN system on my engine?

Yes!  It is best to start out with new oil where preferred viscosity and additive levels are a given.  In addition, we recommend sending a sample of the new oil for analysis to establish a baseline for subsequent oil tests.  <top>

33. Will the installation of a puraDYN® system save me money?

Yes!  We would refer you to a "Benefits of Using the puraDYN Bypass Oil Filtration System" document that includes the following main points:

• Cost savings from less oil changes, less associated labor and less vehicle downtime.
• Fuel consumption savings through increased engine efficiency.
• Extended engine life with resultant increased times between major overhauls.
• Reduced volumes of purchased and stored new oil.

• Reduced waste oil disposal costs and associated impacts to the environment.

Pollution is one of the most serious problems facing the world today with further governmental regulatory rules expected to increase oil change costs in the future.  By using the puraDYN® system, your problems of used oil storage, disposal and related costs are significantly reduced.  Also, the puraDYN® system filter can be disposed of through incineration.  <top>

34. Does oil analysis guarantee that engine oil is suitable for continued use?

Yes!  Laboratory oil analysis is the best method for determining the condition of the oil.  Since oil analysis provides an early warning of excess engine wear, corrective actions can be taken at an early stage, which could save costly engine overhauls. The puraDYN® system's fine filtration will not mask any abnormal oil condition or engine wear problems. <top>

35. What is the puraDYN® standard filter with additives and what are its benefits?

Since the Clean Air Act of 1992, diesel engines are being built to meet much tighter specifications, include more integrated electronic controls and utilize advanced fuel management systems, which result in ever greater demands being placed on the lubricating oil and its additives.

puraDYN Filter Technologies Inc. developed and patented the standard filter with built-in time-released additives to replenish the normal loss of additives that occurs through mechanical use of the oil within an engine.  Extensive testing has shown the puraDYN® filter with additives will keep TBN (Total Base Number) and TAN (Total Acid Number) levels at or near that of original oil.  Benefits to the user are consistently clean oil, assurance that viscosity will remain constant and that virtually no acid build-up will occur.

The standard filter with additives contains supplemental viscosity enhancers, anti-oxidants, anti-wear agents, detergents, anti-foaming agents and anti-acidification additives packaged within small pellets.   These are the same time proven, industry accepted additives used by major oil companies and are supplied to us by one of the nation's largest manufacturer of oil additives.  These additives are compatible with all additives in use today.  The additives are timed-released over the life of the filter, so they will not upset the chemistry of the engine oil, which can happen when aftermarket additive packages are introduced in bulk to the oil.

The standard filter with additives filter was designed for use in all CG-4 oils, which contain zinc as an oil additive.  However, there are many other applications that can benefit from the standard filter with additives.  The standard filter with additives should not be used when 'zinc-free' oil is required.  Some 'zinc-free' oil applications might include commercial marine, locomotives, pumping stations, hydraulics, compressors and cutting oil.  Typically, a puraDYN® system with standard filter (no additive) can satisfy the needs of a 'zinc-free' oil filtration application.  Note:  When viewing the bottom of standard filter with additives you should see a yellow-colored material and when viewing the bottom of a standard filter (without additives) you should see a red-colored material.<top>

36. What is CGP® and what are the benefits of using a puraDYN filter with CGP®?

CGP® is a process for chemical grafting, a technology that enhances or accentuates the normal characteristic of the base material that it is applied to.  As such, when CGP® is applied to the cotton media of the puraDYN filter, it effectively enhances the cotton's natural tendency to attract and retain sulfur, soot and water, giving the puraDYN filter greater contaminant holding capacity.  Further, puraDYN Filter Technologies Inc. introduced this proprietary and patent-pending technology to the marketplace to address the more demanding bypass filtration requirements of 2002 and newer low emissions diesel engines.<top>

For more information about puraDYN Filter Technologies, Incorporated products, please contact us within the US at 1.866.puraDYN (1.866.787.2396) or outside the US at 1.561.547.9499.  <top>

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This page last updated: 01/22/08