1994 GMC Jimmy Owner's Manual - Page 245

To Check Engine Oil Pull out the dipstick and clean with a paper towel or cloth, then push it it back in all the way. Remove it again, keeping the tip lower. When to Add Oil If the oil is at or below the ADD line, then you'll needto add someoil. But of you must use the right kind.This section explains what kind oil to use. For crankcase capacity, see "Capacities and Specifications" the Index. in NOTICE: Don't add too much oil. your engine has much oil that the If so shows oil level gets above the cross-hatched area that the proper operating range, your engine could be damaged. 6-9