Originally posted by SpaceTruck'n
Your service manager is a wanker.
Synths are fabricated, (not refined) for the maximum lubrication of ALL internal combustion engines. With hydrocarcabons that are... Whatever. Its a long story and it's gettiing late.
Early synthetic oils tended to suck. But then again early engines tended to suck.
That was then, this is now, synthetic oils and and engines are times better. Even gas tubines can benifit from the wholesome creamy goodness of synthetic oils.
Mobil 1 syth is now the finest motor oil INVENTED.
Air Force One uses Mobil 1.
As far as octane...

Do what you feel man, but I'm not hip to $2.00 a gallon. But that's my view I could be wrong.
Thanks, I was begining to think so about this guy anyway, if you can't trust the Dealership you bought the thing from, who can you trust.:madp2: