Re: Dual vs. Single Oil Filters (Which is better)

[Sachelle Babbar <sbabbar@iris.nyit.edu>]

Dual filters were used on oil(air cooled) turbo motors because there was a
larger oil feed supply to them. The second feed to the turbo needed a
second filter, as a result. Anything after that, like the 85 mc (2,144 cc)
used leftover parts.

****************************************************************************
*Steve                                             Sachelle Babbar
*'87  5000CS Turbo 5spd 1.3-2.0 bar             <SBABBAR@IRIS.NYIT.EDU>
*Cockpit adjustable wastegate, AudiSport badge
*
*Disclaimer:"Any information contained herein is based purely on my own
*personal experience and may not necessarily reflect yours. Use caution as
*your results may vary from mine."
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On Tue, 4 May 1999, Todd Phenneger wrote:

> On Tue, 4 May 1999, Phil Payne wrote:
> 
> > Yes, WR had two filters.  MC/MB/1B had a single filter.  The delta is
> > probably because of the introduction of hydraulic lifters and the need
> > to keep the oil galleries filled with the engine off.  I would suggest
> > that an engine with hydraulic lifters should retain the single filter
> > with anti-drainback valve.  If you're determined to go with two (and I
> > can see no benefit in competition, since you change the filters much
> > more often anyway) I would suggest you review the effect the change
> > has on the retention of oil in the hydraulic lifter oil supply.
> 
> 	I thought they used basically the same filters for the main filter
> so if the AUX filter also has an Anti-Drainback Valve then it may be a
> better setup.  Hmmm.
> 	Thanks
> 		Todd
> 
>