Eaton Posi limited-slip differential for the Ford 8.8 in. axle with 31-spline gears, all ratios. 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 Ford 8.8 in. axle with 31-spline gears, all ratios. 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.