Eaton Posi limited-slip differential for the GM 7.5/7.6 in. 10-bolt axle with 28-spline gears, ratios of 3.23 and higher. A quality petroleum-mineral-based, GL5-rated 80W-90 gear oil should be used, and a four-ounce bottle of friction modifier should be added for optimum performance if the gear oil doesn't already contain one.
Eaton Posi limited-slip differential for the GM 7.5/7.6 in. 10-bolt axle with 28-spline gears, ratios of 3.23 and higher. A quality petroleum-mineral-based, GL5-rated 80W-90 gear oil should be used, and a four-ounce bottle of friction modifier should be added for optimum performance if the gear oil doesn't already contain one.