RE: Pep Boyz - Synth vs. Dino

["Ken Keith" <ken.keith@specialdevices.com>]

"Dan Sinclair" <sinclair@prospro.com> wrote:
> 
> I don't want to revive a thread that might be better left alone, BUT, if I'm
> not mistaken was there not a lengthy discussion about how "going synthetic"
> after using "dino" would/could result in seal deterioration/failure and
> catastrophic oil leaks?

Sorry, I'm catching up a bit on digests.

IIRC, the chain of events was supposed to have been this.  The car builds up 
sludge and such internally.  This prevents the seals from contact with the oil, 
so they shrink and dry out.  Then, switching to synthetic with detergents in it 
cleans out the sludge and junk.  This leaves the seals unable to seal, causing 
leaks.  This is the theory that I believe.  IMO, I don't think seals are eaten 
by synthetic.

As impractical as some may find it, I prefer to switch to synthetic, and fix 
the leaks (if any) as they occur.

Ken