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What is the most likely cause of antifreeze in the oil on a 1990 Olds Cutlass Supreme 2.3L Quad 4 engine and can you use an oil additive to fix it?
Wiki User
∙ 12y ago
cracked head, cracked block
Bring it in asap. Id be willing to bet you have a cracked head. If you keep driving like that you'll screw up your engine. Coolant isn't made to lubricate an engine, and your pistons and other items in your engine will pay for your driving it like that. Im surprised your car doesnt overheat. No oil additive is going to fix your cracked head, it needs to be replaced.
Wiki User
∙ 12y ago
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