Q: I put motor oil in my transmission fluid.

asked by on March 22, 2018

I put about a half a cup to a cup of premium SAE 5W-30 synthetic blend motor oil in my transmission fluid by accidenť . I have not driven the car since doing this. Did I ruin the car. What, if anything can/should I do? My car has 137000 miles.
My car has an automatic transmission.

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