1998 Buick Skylark Owner's Manual - Page 236

Checking EngineOil Pull outthe dipstick and clean with a paper towel or it cloth, then push back in allthe way. Remove it again, it keeping the tip down,and check the level. 3100 Engine The engine oil dipstick on the 100 engine is located 3 directly behindthe engine fan. T m off the engine and give the a few minutes to oil drain back into the pan. If you don't, the oil dipstick oil might not show actual level. the 6-13