Castrol Syntech 10W30.

 

Ralphs brand Heavy Duty Motor Oil.

 

You already said that already.

 

I know


EDIT: I wanted to make sure Sownman knew what kind of oil I burn....er, I mean use

 

sams club regular mobil 10w30

 

Steve,

I believe if you pick up a bottle of Amsoil, it compares the viscosity break down and maybe some other stuff to alot of the leading brands, ie Mobil, Quaker etc. There's alot of idependent tests out there too.

 

Amsoil Series 2000 0-30 racing oil here..cost $ 8.45 per quart.

 

Be careful about "racing" oils, they are made to have very frequent change intervals. and dont have the additives for daily street use.

 

I'm not sure where your info is coming from, but Amsoil's Series 2000 is recommended for their longest OCIs, and has a very robust additive package. You can argue that it isn't worth the added cost over their 10W30, but there is belief that 0W- oils do a better job of getting oil to your engine quicker at startup, minimizing wear.

Amsoil's viscosity index improvers are very shear stable, so S2000cabrio is putting some good stuff in his engine.

 

The post says "racing oil" I have read posts somewhere on this subject. and yes the amsoil series 2000 0-30w is excellent oil. and worth the cost. I have it in my '97 toyota truck, and it runs better and more MPG.