[V8] Oil Weight

[Buchholz, Steven]

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.