ATF fluid in a 5speed?

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12-20-2005, 07:46 AM

#41

tavarish

fwd gone rwd cr00

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Quote:

Originally Posted by Stephen Max

It is not uncommon for people to put a quart of ATF in their crankcase. It has a much higher detergent content than motor oil and can clean out a gunked up engine pretty effectively. The reason you don't want to run only ATF in your engine is because it can't handle high engine temperatures as well as engine oil. Manual trannies run at much cooler temps, though.

There's a lot of people in this thread that are saying just don't do it without giving a reason why (I guess because they don't know why). Point taken, but it is educational to talk about exactly why you shouldn't do it, and under what circumstances it might be okay.

I understand this, and I also know you can add some ATF to your gas tank to clean out the fuel injectors...i'm just saying that's not it's intended purpose, and there is a reason Nissan wrote "gear oil only". I admit, you got me on the fact that I don't know the reason you shouldnt put ATF in the manual tranny, but I wouldnt wanna be the one to need a rebuild just cause i 'wanted to know' I guess the best thing to do, since it is all speculation, is to have some facts on how exactly the fluid reacts with the metals in our trannies. I'll try to look it up.

Thanks,
-Freddy

12-20-2005, 08:46 AM

#42

nismology

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Quote:

Originally Posted by Stephen Max

There's a lot of people in this thread that are saying just don't do it without giving a reason why (I guess because they don't know why). Point taken, but it is educational to talk about exactly why you shouldn't do it, and under what circumstances it might be okay.

This was precisely what i've been trying to say.