[BiturboS4] engine oils

Matt twentyV matt_20v at yahoo.com
Fri Sep 13 10:36:26 EDT 2002

> One final thing, though...I've heard many people say
> on various newsgroups
> that dino oil is better for a brand new engine (i.e.
> don't use synthetics
> until after 10k miles or something like that). I
> can't understand why this
> would be true.  Anyone have an idea?

What I've heard (read it on the internet so it must
be true ;-) is that non-synth is absorbed by the seals
and causes them to swell and seat properly.
Anecdotal evidence to support this- switching to
synth on a high mileage engine can and does lead to
increased leakage.

Matt Rooke
'91cq- modified, still slow
'00S4- stock, very fast

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