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>No problem, as long as you don't have a vehicle with advanced mileage
>(80-100K+) and heavy sludge buildup.
No easy way to tell this before it's too late, I think. I'd say synth's a
good bet if you've been running high quality oil with regular changes.
>Run a good engine cleaner thru
>as per label directions (I usually get Gunk engine cleaner at the
>local parts store), then change, and make your first couple of oil
>changes a bit early.
>> 2) I gather Castrol and Quaker St along with Mobil are the top synths, =
>> but is there a good rating on any others, such as Havoline (texaco)???
>I would not name Castrol or Quaker in the top three. They are but
>rank newbies in synthetic oil.
In North America perhaps. I believe that Castrol's been selling synth for
many years in Europe. Comments from our European friends?
>The oldest and most researched brand
>is Amsoil; Redline has a higher quality base stock but is even more
>expensive. Mobil 1 would be my #3 pick. IMO, every other synthetic
>brings up the rear of the pack after these three.
I've heard good anecdotal stuff about Syntec (Castrol), though I plan to
switch to Mobil 1 at some point.
San Jose, California
'87 560 SL