The benefits of big oil?
I dont know if I am a candidate for bigger oil or not. I am running 160 cc stg II's with 80% nozzles. I have a total Diesel chip on the truck. I am running a stock 15° in an OBS truck. The only time I see a CEL is when I get up on the hwy really laying on the go pedal. I can go wot through first and all the way through third w/o a light(I have a 5spd). If I step up my oil will I see any performance on the bottm where I am not getting the CEL or will nothing change there?
You're not seeing a CEL until after 3rd because it takes something like 15-20 seconds of the PCM seeing the existing condition before it sets the light.
So, the problem is there in 1st-3rd most likely, you just aren't there long enough to see the light.
I don't think you're a canidate for "big" oil, but "better" oil like the SRP1 or the Adrenaline would probably do quite well in your truck.
And it'll make a difference everywhere you're asking alot from the truck.