-140 can be used when running a spool posi-traction or open differentials it provides ... additives required for most clutch type positraction units available by the quart or 12 ... 6.00 55-0040 torco sae 85-140 gear oil 12 qts .66.00 ring and pinion set-up ... car rear ends including 9 ford 10/12bolt chevrolet dana 60 and 8 3/4 mopar both ...