i have a 1998 cadillac catera got oil in spark plugs and resouir and it misfires on 1998 Cadillac Catera

oil in spark plugs and oil in the coolant resouir

Asked by for the 1998 Cadillac Catera
poss headgasket issue get a diag and est
1 more answer
Headgasket issue and probably valve gaskets as well. Get estimate.