Castrol Syntec or AMS oil (quick response needed)

[Muzzy]

wut would be a better choice...goin racin tomorrow
(due anyway)
no turbo im runnin N/A but i got some mods
Castrol $5 AMS $7.50

so....opinions or experiences??

[DuffMan]

Has your car had synthetics for most if its life? If no than neither.

[Dousan_PG]

my car was never synthetic
i switched around 130K
went to 20w50 amsoil
never had any problems

[Muzzy]

well its a fresh rebuild and the oil i put in it was a synthetic blend. (1k miles)

but would u go with AMS oil over the Castrol?
and reasons y

[orion::S14]

Mobil 1, 10W30

Can't beat it for the price...

Later - Brian

[AKADriver]

The 'full synthetic' Castrol that you can buy at Autozone, etc. is still based on a conventional oil base stock. This is a common trait to most of the mainstream synthetics (Pennzoil, Valvoline, etc).

Amsoil, Redline, and maaaybe Mobil 1 are based on a true synthetic stock. Castrol also has a REAL synth but it's ridiculously expensive (it's the factory fill in the BMW M5, I forget the brand name for it).

The main advantage of the 'real' synthetics is a bit of extra thermal capacity. Friction and wear levels should be about the same. If your oil temperatures stay pretty moderate, I wouldn't worry about them so much. If you have a turbo, worry about it :) and get the good stuff.

[Muzzy]

thank u thank u very much:bowdown: :bowdown:

so i will need ams oil...no fan jus rad and rad fan..good amount of heat

i'll be pickin up some today

[AKADriver]

Coolant temps and oil temps can very widely. Oil temp is much more dependent on the oil system itself and how the engine's driven. That's one of the big reasons there are so many aftermarket high-capacity finned aluminum oil pans for the SR20DET. More oil can absorb more heat and the finned aluminum pan can dissipate it faster.

Track use = oil temps skyrocket.

Daily driving, don't worry about it so much.