Q: Soft knocking sound, goes through a lot of oil but I don't ever see it "leaking" from anywhere.

asked by on December 19, 2016

Soft knocking sound, goes through a lot of oil but I don't ever see it "leaking" from anywhere. No puddles left at my parking spot at home or work. Lady from work said I had huge white smoke coming out of my tailpipe when driving home from work. Knocking sound got extremely loud today, oil light came on on dashboard. Oil seemed to be completely empty even though I filled it up 2 weeks ago. Filled with oil again, still knocking very loud and barely any power but check engine light never came on. Have I blown my engine? Is the car even worth fixing?

My car has 215000 miles.
My car has an automatic transmission.

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