Do not put LSD additive into the differential. As Jeff said, the differentials in the Supra work on gearing (like in the transmission) vs friction (like in the clutch).
So it doesn't behave like other limited slip diffs which the additives were designed for.
My BPU '97 has 95,000 miles and hasn't had any problems yet. I use only stock Toyota fluids for cooling, transmission, differential. The only aftermarket fluid I use is Mobil 1 for the engine and the pink stuff for the windshield wipers
Oh yeah, and Castrol GTP (i think) brake fluid
supra_10 said:
Jeff,
Would you mind spelling out for some of us, chemically-challenged, the bottom line -- Is Redline WITHOUT the LSD additive the one to use?
Jay