best oil for performance engines?

whats your choice and why

Brad Penn,because it works
Gus

Schaeffers because I have used and abused it,and after sending it in for analysis it was in like new shape after 7,000 hard miles in a turbo car....and its a cool green color Also it is not priced like a lot of "hi-po" oils.

Been using Valvoline since the 70's. Ron

Shell Rotella T in my 440.
Because a bunch of people here recommended it years ago.

Royal Purple. Saw a Falex test in person with it and several other brands. It barely hiccuped at the same load pressure at which Castrol Syntec nearly caught fire. I was impressed.

I use the lightest diesel grade oil ...Shell is good stuff. The higher-priced stuff ? ... uNnecessary... uNless you have money burning a hole in yurr pocket.

All my stuff has flat tappet cams so im not running any new low zinc SN oil..

Ive been running shell rotella t5 10w30.. Cheap and easy to get and its a HDEO.

http://www.yellowbullet.com/forum/showthread.php?t=433036

I just emailed Shell about the percentage of synthetic in the 10-30 Rotella. My reply will come from the Philippines..........

I wonder what it would do to my 165K mile Corolla catalytic converter?

Shell Rotella T 15w40.

Rotella T + STP. Works well, protects my flat tappet plus inexpensive and available.

I like Valvoline VR-1 10w-30

wesson

Valvoline 10-30 plus 1/2 bottle of ZDDPlus----but there is certainly more than one way to skin this cat.

Whatever's on clearance at Walmart!
R.

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Whatever's on clearance at Walmart!
R.

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Same here......