onefast2002ss

I have recently done this exact post on ls1.com to see what they all used in thier ls1's. this is for fords, in my ford mustang 87 i use royal purple 15w40 what do you all use in yours??

Silent Bob

Mobil1 - whatever grade is on the oil cap.

algregory

Red Line 20-50 has been my oil of choice for many years. I also add www.tufoil.com, 8 ounces each change.

I talked to Red Line, they say run whatever Mustang GT Manual says as in weight. I believe that is 5w-20. I already have it, trying to decide, change not at 2k miles, or stall longer.

I talked to www.tufoil.com, they insist that I should wait a least 4k to 5k miles before introducing their product.

My last ride had a hopped up engine. 128k on that little 4 banger. About 15 sets of tires. Just sings. Custom built my a machinest that said "Tufoil" is good stuff. My use says the was correct. Four bangers gotta be driven hard, cause, we know they not that powerful. I drove mine hard!