C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

What type fluid for 6spd?

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Old Aug 16, 2002 | 04:35 PM
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Default What type fluid for 6spd?

Just got back from visiting Mr. Goodscrew. The clueless Service Rep. had no idea what type fluid goes into my 91 6spd. I pointed out that the Owners Manual shows it takes a 5W30 weight lube but he did'nt know if it was regular oil or "special" GM fluid. He sugested I go to another GM dealer which specializes in Corvettes to have it done. The Parts Dept. looked up the part number and said that they would have to order a whole case of the fluid and charge me for it eventhough I would not be using the whole case. Have you ever heard of such lousy service? Any help would be appreciated.
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Old Aug 16, 2002 | 04:39 PM
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Default Re: What type fluid for 6spd? (72vetteman)

You got away...thank God...Don't go back

Foot Note:It does use engine oil but requires a certain ph and chemical composition. You can either use GM P/N 1052931 5W-30 or BMW M5 engine oil. This oil can only be purchased at a BMW dealership. It is imported from Europe through Castrol. BMW P/N 07510009420 10w-60 fully-synthetic.
Pick up 3 - 1 liter containers (approx $30). I got this from
http://www.zfdoc.com./faq.htm


[Modified by JonM, 4:20 PM 8/16/2002]
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Old Aug 16, 2002 | 04:46 PM
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Default Re: What type fluid for 6spd? (72vetteman)

I went and got some once from a service department and they sold me auto tranny fluid (what their "expert" in the back said they use). Needless to say I took it back and got the right stuff.

Like Jon said, good thing you got away!
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Old Aug 16, 2002 | 05:16 PM
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Default Re: What type fluid for 6spd? (72vetteman)

you use oil, not tranny fluid...unless you want to pay $5-6k for another tranny... :yesnod:
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Old Aug 16, 2002 | 05:18 PM
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Default Re: What type fluid for 6spd? (72vetteman)


ZF6 fluid = GM Part#1052931

Get 3 quarts. You will use about 2.5 quarts to refill.
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Old Aug 16, 2002 | 05:20 PM
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Default Re: What type fluid for 6spd? (72vetteman)

Part number from GM is 1052931 Manual Transaxel fluid.

ZF has also approved Castrol formula RS 10W-60 available at BMW dealerships. Have heard that BMW is going to stop importing this oil.
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Old Aug 16, 2002 | 05:21 PM
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Default Re: What type fluid for 6spd? (Voltech_LT4)


The correct GM fluid is: Manual Transmission Fluid 5W-30 part # 1052931.
Hope this helps. ;)
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Old Aug 16, 2002 | 06:21 PM
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Default Re: What type fluid for 6spd? (Ron92Blackrose)

Thanks guys, you are the greatest!!!!! :cheers:
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Old Aug 16, 2002 | 06:27 PM
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Default Re: What type fluid for 6spd? (72vetteman)

Next time I will change the oil my self. Just got back from the chevy dealer for ZF6 oil changed, cost $93. With the corvette club discount I still paid $85


Bruce
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Old Aug 16, 2002 | 07:01 PM
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Default Re: What type fluid for 6spd? (Bruce)

At $12 a quart, you didn't do that badly.

You need a special size Allen key (unless you just happen
to have a 17mm (!!) key hanging around (about $15 at Sears)
to open the drain and fill ports.

Then, since you can't pour the oil in, you need a hand pump
of some sort, and the one I found was $20.

Of course, then you would own the tools for next time...
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Old Aug 16, 2002 | 07:03 PM
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Default Re: What type fluid for 6spd? (PeteL)

ZF has also approved Castrol formula RS 10W-60 available at BMW dealerships. Have heard that BMW is going to stop importing this oil.
When I went to purchase a case of this stuff, the BMW parts guy said he hadn't heard this. I bought a case anyway. My ZF shifts soooo much better with the Castrol, and it's ZF approved, I could never go back to the GM stuff.

...The Parts Dept. looked up the part number and said that they would have to order a whole case of the fluid and charge me for it eventhough I would not be using the whole case. Have you ever heard of such lousy service?
Yes I have, it sounds like Woodfield Chevy in Schaumburg. I hate Chevy dealers like that. Go to the BMW dealer, get some Castrol and you'll be better off.

Eric
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Old Aug 16, 2002 | 07:29 PM
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Default Re: What type fluid for 6spd? (SilvaDragon)

Then, since you can't pour the oil in, you need a hand pump
of some sort, and the one I found was $20.
About 4 bucks

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Old Aug 17, 2002 | 03:23 AM
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Default Re: What type fluid for 6spd? (JonM)

quote:
________________________________________ ____________________
I went and got some once from a service department and they sold me auto tranny fluid (what their "expert" in the back said they use). Needless to say I took it back and got the right stuff.
________________________________________ ____________________

the T56 in my camaro took automatic tranny fluid. thats prolly what got him confused.
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Old Aug 17, 2002 | 09:17 AM
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Default Re: What type fluid for 6spd? (72vetteman)

:confused: Question......... I just bought Redline MT 90 gear oil for my 6 speed. Has anyone run this stuff before? Is it compatible with what's in there? Bottom line.... am I gonna blow up? Please let me know! :seeya
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Old Aug 17, 2002 | 09:49 AM
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Default Re: What type fluid for 6spd? (93TorchRedC4)

Red Line MTL may be used in transmissions which recommend 70W, 75W, 80W, or 85W GL-4 gear oils, or SAE 30 or 5W/10W30 motor oils. If a 90W GL-4 or SAE 40, 10W40, or 15W40 is required, MT-90 may be used.
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