Ok to put ATF in 78 280z manual transmission? - Nissan : Datsun ZCar forum :Nissan Z Forum: 240Z to 370Z
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post #1 of 7 (permalink) Old 12-13-2004, 06:02 PM Thread Starter
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Ok to put ATF in 78 280z manual transmission?

Hey everyone,
I was just wondering if it's ok to run ATF in a 78 280z manual transmission for a couple hundred miles at most? Mainly to let the ATF detergents clean out the tranny before I put Redline in it.



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1978 280z Black Pearl Edition
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post #2 of 7 (permalink) Old 12-13-2004, 06:17 PM
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Re: Ok put ATF in 78 280z manual transmission?

I wouldn't. ATF is not designed for the wear and tear of a manual transmission. My opinion is that it's not worth the risk unless you are independantly wealthy.
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post #3 of 7 (permalink) Old 12-13-2004, 07:12 PM
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Re: Ok put ATF in 78 280z manual transmission?

If it was made to work in a manual, it wouldn't be called automatic tranny fluid. Actually I think it's too thin to work in a manual tranny. Nor do I think it would hold up or lubricate as well. It's more of a hydraulic liquid than a lubercant.


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post #4 of 7 (permalink) Old 12-13-2004, 07:27 PM Thread Starter
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Re: Ok put ATF in 78 280z manual transmission?

Well actually many manual transmissions specifically call for ATF (look it up), so I wouldn't call this a stupid question. I just don't know if it is safe to run it in brass synchro transmissions like the 280Z has. It has to lubricate the gears on an automatic transmission just the same as a manual so I would also say that it is equally a hydraulic fluid and lubricant.

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post #5 of 7 (permalink) Old 12-13-2004, 07:58 PM
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Re: Ok to put ATF in 78 280z manual transmission?

If not Auto trans fluid you can always use engine oil. That works great.

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post #6 of 7 (permalink) Old 12-13-2004, 08:03 PM
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Re: Ok to put ATF in 78 280z manual transmission?

Moto is right. My S15 Jimmy's 5-speed ran on ATF fluid. I could hardly believe it either, but that's what it called for. However, as cleaning out your Datsun tranny by running ATF, I'd side with others here and say it's not a good idea. In fact, I question the need to 'clean' one of these things at all. Unless they're really fragged, they don't 'burn' oil and a simple change to fresh should be all the cleaning you need to do. If you're thinking that ATF will "fix" a sticking synchro or some other malfunction, I'd venture a guess that it would make it worse. Just my 2 cents.

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post #7 of 7 (permalink) Old 12-13-2004, 09:29 PM
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Re: Ok to put ATF in 78 280z manual transmission?

Yes it is ok per me and several others on this site including ASE_MAT. Actually I now run a 50/50 mix of ATF and Gear oil.

Ray


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