Re: Oil Filter differences - Audi pn's?

["Dave C." <conner@cfm.ohio-state.edu>]

>Phil Payne wrote:
>"Anti-drainback valve?"

I understand the importance of this feature, that's why I've been buying
the OEM (Mahle) filters.  I've compared the OEM (N/A 5 cylinder) filter and
others like FRAM and there does appear to be a piece missing in the non-OEM
which I assume is the valve.  The OEM can be bought for about the same
price as FRAM ($2-3) if you shop around, at least that's my experience
buying the ones spec'd for the N/A 5 cylinders.

>Andrew Duane wrote: 
>The turbos that have a single oil filter have a much larger filter
>than the N/A 5 cylinders (which is the same as one of the filters
>on the turbos that have two).

AHA!  That must be the one I'm looking for.  Twice as big = twice the cost,
I guess.  It kind of makes sense, but I'm not sure that bigger is
necessarily better, especially if the oil and filter are changed
frequently.  At least this gives a clue what the tradeoff might be if one
uses the N/A filter in it's place.
Thanks, Andrew.  And thanks also to Phil, Andrei, and Ti Kan.

Dave Conner