Motors Oil ..........mineral or synthetic ?

[luger]

, I use with my motor chevy 5,9 450HP...

mineral or synthetic ? Type?

Thanks

[builder]

This won't be much help. But, maybe this is a question for your engine builder. Is it an "American Speed" engine?

[kingb]

go onto general gassing and ask the oil bloke there

its a thread at the top of the forum

[stig]

Personally speaking, I use Valvoline Racing 20W50

[tuxman]

yep same as stig valvoline 20/50 mineral .

[eliot]

Silkolene Pro-R fully sync, as advised by Opie Oil man, was specicfied because of turbos.

[luger]

eliot said:

Silkolene Pro-R fully sync, as advised by Opie Oil man, was specicfied because of turbos.

I would want to use BARDHAL XTC C60 15w50 or BARDHAL XTC 20w50 !!!
which of the two?

[eliot]

luger said:

eliot said:

Silkolene Pro-R fully sync, as advised by Opie Oil man, was specicfied because of turbos.

I would want to use BARDHAL XTC C60 15w50 or BARDHAL XTC 20w50 !!!
which of the two?

Never heard of that, therefore no comment. The valvoline stuff is good, I only used a fully synthetic because of the high temps around the turbos, othwerwise a more moderate oil would of done. (remember the engine oil gets pumped round the the turbo bearings, which are very hot)

[GTWayne]

My engine is due to be started shortly after nearly 3 years since it was built and dynoed by Peter Knight.I rang and asked what was the best oil to use and he recommended Joe Gibbs performance (?yes I know,thats what I thought).After ringing and speaking to Fredrick at the U.K. distributers,Anglo American Oil Company Ltd.;01929-551557,I was sent a fact sheet and was impressed enough to order running in oil,an SAE10W-30 synthetic engine oil and a SAE75W-110 synthetic gear oil.It's well expensive but as I have followed all of Peters instructions to the letter so far,I did not want to spoil the ship for a hapeneth of tar so to speak.