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Can Transmission Fluid be Used to Replace Motor Oil?
 
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Question:
Can Transmission Fluid be Used to Replace Motor Oil?
I was told by my mechanic that it wouldn't hurt (that is was even better) to use transmission fluid in place of the oil.  That it was better for the engine, that the motor would run cooler and that the transmission fluid would not break down its viscosity like oil. What do you think?
-- Franklin Herron, Pearland, TX
Answer:
We would not recommend using an ATF in your engine. It completely lacks the additives required for today’s modern engines.
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