[V8] Oil Weight

[quattro + 5 or 8 = fun]

Oh, fyi- I change the oil in all 20 rigs using either Redline or Royal
Purple every 4K miles.  As steve said, I think the most important thing is
frequent changes.  Besides, most of them are used in "harsh" conditions.

Shayne


PARTING:  1972 Mercedes Benz 280 SE 4.5
PARTING:  1986 Audi 4000 CS quattro


> From: "Buchholz, Steven" <Steven.Buchholz at kla-tencor.com>
> Date: Wed, 29 Nov 2006 18:15:26 -0800
> To: <v8 at audifans.com>
> Conversation: [V8] Oil Weight
> Subject: Re: [V8] Oil Weight
> 
> My personal justification for continuing to use the non- or semi-synth stuff
> is that the PT/ABH has such a large oil capacity and is equipped with an oil
> cooler means that there really isn't that much stress placed on the oil.  I
> prefer knowing that the shorter replacement intervals means that there's less
> contamination hanging around in the engine overall ...
> 
> Steve B
> San José, CA (USA)
>> 
>> The oil leaks I would not be concerned about. Like most everyone has already
>> said, most of the cars already leak oil and being in the automotive service
>> industry I can tell you that very few vehicles spring new leaks due to
>> changing from dyno oil to synthetic.  Yes, the "varnish" that may be coating
>> older seals that the synthetic oil  cleans away is true. However if the seal
>> leaks because that "varnish" is gone away, the seal was bad to start with,
>> or it was just being held together by a temporary patch or band-aid, the
>> "varnish" on the sealing surface.
>> 
>> However..... In the case of the V8 engines, I WOULD WORRY about the fact
>> that they run very low tension rings on the pistons due to their unique
>> block and piston design. Synthetic oil, due to it's unique molecular
>> structure which coats surfaces much better than dyno oil (impregnates the
>> metal pores better) can in some (certainly not all, those of you who have
>> used it without problems) cases cause excessive oil blowby past the rings
>> and cause the vehicle to use or burn more oil than some of us may like or
>> leave the fun "blue cloud" behind us as we accelerate.