1997 GMC Safari Owner's Manual - Page 267

Engine Oil It's a good idea to check your engine oil every time you get fuel.In order toget an accurate reading,the oil must be warm and the vehicle must be on level ground. Checking Engine Oil Pull out the dipstickand clean it with a paper towel or cloth, then push it back in all the way. Remove it again, keeping the tip down, and check the level. The engine oil dipstick a yellow ring. is Turn off the engine and give the oil a few minutes IO drain back into the oil pan. you don't, the oil dipstick If might not show the actual level. 6-11