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

[Todd Phenneger <phen9461@uidaho.edu>]

Cool,
	THanks   Well, I still may use the dual setup to help with lower
Oil Temps and better filtering.  We'll see.
	THanks everyone. 

	Todd Phenneger
	1985 4000 quattro / silver / daily driver
	1983 ur-q / black / fixing it up
	1984 4000 quattro / modified/ awaiting Turbo Transplant.
	1987 4000 quattro / Saphire Metallic Blue/ Girlfriend's
	1996 A6q / Volcano / Dads Car
   *****1985 5kt / PARTING OUT!

On Wed, 5 May 1999, Sachelle Babbar wrote:

> 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."
> ********************************************************************************
>                                                                                
> 
> 
> 
> 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
> > 
> > 
>