3

What is the probable cause of engine oil in the coolant? There are no performance issues but when I checked the coolant level, I noticed oil residue.

  • 1
    How much is "residue" ... some tiny spec of an amount? Or is it all over everything? – Pᴀᴜʟsᴛᴇʀ2 Jul 19 '16 at 21:17
  • 2
    Check your oil too, if oil is in the coolant it's bad, but if coolant has gotten in your oil and it is contaminated (frothy, milky, bubbly, emulsified) it's real bad and you should not drive the car. – Jimmy Fix-it Jul 20 '16 at 3:29
1
  • Nr. 1 cause: damaged head gasket
  • Nr. 2 cause: damaged oil cooler (if present)
  • Nr. 3 cause: cracks in the engine block/head
| improve this answer | |
1

Check for coolant in your oil too (it'll look milky or frothy). If you have that, have your car towed to your garage of choice and get your head gasket replaced. It's not safe to drive!

| improve this answer | |

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.