1993 Chevrolet S10 Pickup Owner's Manual - Page 271

How to Check Lubricant: i I KO998 If thelevelisbelowthebottom somelubricant. of thefillerplughole,you'llneed to add If the differential is atoperatingtemperature(warm),addenoughlubricantto raise the level to the bottom of the filler plug hole. If thedifferentialiscold,addenoughlubricant (12 mm)belowthefillerplughole. to raisethelevel to 1/2inch What to Use: Refer to the Maintenance Schedule to determine what kind of lubricant to use.See"RecommendedFluidsandLubricants"intheIndex. Engine Coolant Thefollowingexplainsyourcoolingsystemandhow to addcoolantwhen low. If youhave a problemwithengineoverheating,see"Engine Overheating'' in theIndex. The proper coolant for your vehicle will: Givefreezingprotectiondownto-20°F (-29°C) or -34°F(-37°C)for Canadian vehicles and vehicles with the cold climate option. Giveboilingprotectionup to 258°F (125°C). it is Protectagainstrustandcorrosion. Helpkeep the properenginetemperature. Letthewarninglights and gagesworkastheyshould. 6-23