B@lliZtiK:
Mobil 1, however , is no longer a full synthetic , isn't that correct?"
Another easily believeable rumor that isn't true. Mobil is still using PAO in Mobil 1 even though if they switched to a Group III like most others, they'd make more money. Group III synthetics from Castrol, QS, Pennzoil, Chevron/Havoline, Valvoline and others simply aren't wirth $4+ per quart ... not when you can get a Group II+ base oil for $1.00-$1.75.
PAO oils cost twice as much to produce as Group III mineral stocks.
Some Amsoil dealers/users were actively promoting this rumor ... and guess what? The lowest grades of Amsoil have now switched over to Group III.
"If and when I do upgrade the internals , I want a bullet proof full synethetic oil good enough for some street/strip useage. Of course I'd do a full change out for a full track day , but I don't think 13 seconds out of every hour on drag race day would require any majorly expensive oil, especially not for the comparatively low Hp numbers I'm running. Not nearly as much as say, the Supra guys. Or the 10 second DSMs."
I really love the Schaeffer oils. They make a pure synthetic (PAO) but their blends are just as good at preventing wear and cost only $3 per quart including shipping if you buy $250 in case lots. Really stable stuff that shows very little wear through UOA and leaves the internals very clean ...
They make a helluva 15W40, too.
If you are bent on a full synthetic you might be able to find locally, take your pick among Amsoil & Mobil 1 (all PAO) or Red Line & Motul (all/mostly ester).
"As far as the ash and soot deposits in that engine I was talking about , that was about 10-12 years ago , so back then they may still have been using the older stock you were talking about."
Maybe. They switched to a Group II+ oil several years ago. If you see "PureBase" on the bottle, it's Group II+ oil. Also, look for the "Isosyn" symbol to indicate Group II+ on Chevron bottles.
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