What oil to use?

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Dec 13, 2006 | 09:53 AM

noxiouSS

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From: So Cal

What oil to use?

Changing the tranny fluid soon. What fluid should i use? Also what is the clutch fluid?

Dec 13, 2006 | 09:58 AM

MeentSS02

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Stock 98 transmission? Use a non-synthetic Dexron III ATF for the transmission fill. You'll need 4 quarts. The clutch fluid is standard DOT 3 brake fluid.

Dec 13, 2006 | 04:43 PM

noxiouSS

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From: So Cal

yeah stock 98 M6 tranny

Dec 13, 2006 | 04:45 PM

MeentSS02

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From: Dayton, OH

Just make sure it is non-synthetic Dexron III ATF (i.e. NOT Mobil 1, Royal Purple, Amsoil, etc).

Dec 13, 2006 | 06:18 PM

EchoMirage

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why non syn? whats the differance/problem with using synth? i thought they were better.

Dec 13, 2006 | 08:15 PM

o2man98

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Quote:

Originally Posted by EchoMirage

why non syn? whats the differance/problem with using synth? i thought they were better.

There is no real reason not to run synthetic ATF. As long as the fluid meets the required specs (ie: Dex III) you will be good to go.

Dec 13, 2006 | 10:19 PM

MeentSS02

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http://www.ls2.com/forums/showthread...threadid=13161

It isn't that you can't use it...it's that you should be careful when you are choosing it. I misspoke earlier.

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Dec 14, 2006 | 12:24 AM

MeentSS02

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From: Dayton, OH

Royal Purple is very similar to the Mobil 1 I have in my transmission right now, which I like a lot. GM synchromesh is pretty thick compared to that...doesn't mean it is good or bad, just different.

Dec 14, 2006 | 03:51 PM

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lsx24

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From: NC

I used Mobil 1 ATF which is a safe synthetic according to the link above and my trans shifted smoother than with a non synthetic. A worthwhile inexpensive upgrade.