Prabhakar,
I'm not against the use of Oil purifier.But would like to tell you the facts of oil and
machine related problems that made OEM to stick
to the safe oil change intervals.Lubricant cost
is insignifficant relative to total maintenance
cost.Usually oils and Filters cost about 1 to 3%
only.
OIl RELATED PROBLEMS :
Oil Consumption: Oil drops its viscosity by way of VI Shear thinning,Thermal Cracking which
leads to the increased oil consumption,deposit
formation.Use of oil purifier will not control
this failure mode.It's unfortunate that oil analysis will not detect the piston and
combustion chamber deposists.The analytical results will get diluted by oil consumption and leads to wrong interpretation.
Oil Additives:Fine filtration will remove additives which are not discretely dissolved
in Base oils.It's the Silicon Defoamer additive.
Foaming is a serious problem in Engines.
MACHINE/MAINTENANCE RELATED PROBLEMS :
Fuel Dilution : Improper maintenance of Engine
fuel system is the cause of fuel dilution and
subsequent engine failures.Extended oil change
periods will aggravate the situation.Engine Seziure due to Fuel dilution will be embarrsing.
Engine Overheating : Most of the users ignoring
the Engine cooling system.Plugged Radiators(Internal and External)can cause high oil temperature which leads to rapid loss of molecular ZDDP additives.Elemental oil analysis
is not reliable for tracking the depleation of oil additives,as it will not differentiate the active and inactive additive molecules.This also leads to wrong interpretation.
ANALYSIS RELATED PROBLEMS :
Due to the porosity of fine filters,wear metal
debris is captured by fine filters resulting in
less debris in oil.At this condition wear metal
analysis is not reliable.Filter Debris analysis
is time consuming and difficult to perform by
commercial labs.
In case of Extending oil change periods I strongly recommend to perform periodic oil Analysis to avoid catastropic failures.
Regards
Bala.