1993 Buick Roadmaster Owner's Manual - Page 258

How to Add Fluid: Refer tothe Maintenance Scheduleto determine what kind of transmission fluid to use. See "Recommended Fluids and.lLubricants" the Index. in Rear Axle When to Check and Change Lubricant: Refer to the Maintenance Schedule to determine how often to checkthe lubricant andwhen to changeit. See "Periodic Maintenance Inspections" in the Index. If the fluid level low, add only enough the proper is of fluid to bring the level to the COLD area a cold up for HOT area fora hot check.It doesn't take check or the we much fluid, generally less than a pint. Don't overfill. recommend you use only fluid labeled DEXRONBIIE, because fluids with that label made-especiallyfor are you automatic transmission. Damage caused by fluid is other than DEXRON@IIE not coveredby your new vehicle warranty. 0 After adding fluid, recheck the fluid level as described under "How to Check.77 0 How to Check Lubricant: If the level is below the bottom of the filler plug hole, you'll need to add some lubricant. Add enough lubricant to raise the level to bottom of the filler plug hole. the What to Use: Standard Differential Use Axle Lubricant (GM Part 1052271) orSAE No. 80W-90 GL-5 gear lubricant. Limited-Slip Differential When the correct-fluid levelis obtained, push the dipstick back in all the way. To add lubricant whenthe level is low, use Axle Lubricant (GM PartNo. 1052271) or S A E 8OW-90 GL-5 gear lubricant.To completely refill after draining, add 4 ounces (118 ml) of Limited-Slip Differential No. 1052358). Then fill to Lubricant Additive (GM Part the bottomof the filler plug hole with Axle Lubricant (GM Part No. 1052271) or SAE 80W-90 GL-5 gear lubricant.