And there you have it !

SYNTHETIC IS THE WAY TO GO,,, NEW VETTE ARE SHIPPED WITH IT AND VIPERS
THE VETTES ON THE STREET AND IN LIKE THE 24 HRS AT DAYTONA HAVE NO ,NO TROUBLE WITH LIFTERS( ITS A TALE FROM THE OLD SCHOOLERS THAT THE LIFTERS SLIDE ) AND EVERYTHING COMES OUT LIKE NEW AFTER A RACE AND THE STREET CARS GO FOR EVER ,CHEVY AND DODGE WOULD NOT PUT THE SYTH. IN IF IT WAS JUNK ,THEY KNOW IT WILL HELP THE MOTORS LAST AND SAVE WARRANTY CLAIMS

THE SYNTHTIC OF TODAY IS HANDS DOWN TOUGHER AT NOT BREAKING DOWN UNDER HEAT OR COLD AND THE SHEAR VISCOSITY IS TONS BETTER THE THE BEST EARTH OIL THEY DO NOT COMPARE

IF EVERYTHING IS PERFECT (WHICH IS USUALY NEVER) THE EARTH OILS WILL DO FINE BUT FOR HEAVY LOADS ,HIGH TEMPS.OR ENDURANCE RUNS WHERE YOU WANT THAT ADDED SAFTEY GO WITH SYN.
LOOK AT THE BALL WEAR TEST WHERE THEY MAKE AND OIL BATH IN DIFFERENT OILS AND SPIN A BEARING IN IT WITH A HEAVY LOAD AND A SHARP CUTTER PUSHING DOWN ON THE BEARING THE CONV. OIL WILL ALWAYS LEAVE A BIG SCAR AND THE MOBILE ONE OR RED LINE ,ECT WILL NOT .
ITS THE ONLY WAY TO PROTECT YOUR MAJOR INVESTMENT ,DON'T SCRIMP ON OIL ,MAN

BUT BUT
Water is so much cheaper just kidding

BOY IS IT CHEAPER !!!!

bobby daniels,
I agree 100%. My son is an engine builder at the engine development company that builds the 7.0 liter small blocks that go into the C5R Corvettes that won the 24 hrs of Daytona, and LeMans and the American LeMans Series. They can use any oil they want and they and GM choose Mobil One. Other synthetics are as good I'm sure, i.e. Red Line, Royal Purple etc, but for twice the price, are you getting twice the quality of oil? Like I said before, I think Mobil One is the best bang for your synthetic buck

BOY I AGREE THERE IS A GROUP THAT CAN TRULY USE WHAT THEY WANT AND GO WITH THE MOBILE ONE ,THEY USE KILLER FILTERS AND KEEP IT CHANGED BUT FOR THE WEAR AND OTHER PROTECTION THEY DON'T SCRIMP ON THE ENGINES BLOOD !!

Guys, I can't remember where I saw it, but there was a bearing scar test...........most likely in a hot rod, or some other magazine.

One of the things I recall was that they used 2 versions of Mobile1. There was the original, and a Tri-synthetic. The original one actually scored better than the newer one (tr-synthetic). At first, I didn't even know there was an old & a new version. So I dug up an old bottle I had, and sure enough, it did not say tri-synthetic on it..........where the newer one did.

I spoke to a person who sold amsoil, and he said they changed 2 years ago (Mobile1)

Anyone else know anything about this ?

Ratchet, yes, I've been told by someone I know who lives over in the Detroit area that the newer version of the Mobil-1 is NOT as good as the original. He told me that GM is using Mobil-1 and about 2 years ago GM wanted the Mobil-1 made to their own (GM's) specs which has cheapened the quality of the oil. I heard this from a guy who uses an engine builder over in the Detroit area that has at times done some R&D on the dyno for GM---he know's the engineers there. The engine builder once recommended the Mobil-1, but since the change he told him (the guy I know) not to use the it. He switched to something like Valvoline or Amsoil full synthetic oil.

IN MID 2003 PRODUCTION G.M. WILL US PRIVATE LABEL AMSOIL
AS I UNDERSTAND MOBILE DID NOT WANT TO SWITCH FORMULA
THEY ARE BOTH GOOD THE TRI FORMULA DID FAR BETTER IN SOME PARTS OF TEST THAN THEIR OLD BLEND BUT DID ON THE SCAR TEST SHOW LOWER YOUR RIGHT BUT EVEN IT WAS FAR SUPIEROR TO CONV. OILS ,,,,SEE YA

anyone know if this motor has a roller cam and roller rockers? I am a believer in Syn oil but the issue of wear does concern me