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Old Oct 31, 2005 | 12:07 PM
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Whats the best manual tranny fluid to use in my Z. Can't remember sorry! BTW this car shifts worse than my 69 SS Nova M22!
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Old Oct 31, 2005 | 12:12 PM
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A fully synthetic ATF Mobil 1, Redline, Amsoil....
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Old Oct 31, 2005 | 12:16 PM
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Default Brain Fade

Is one better than the other, I need the brand that helps shifting the best!!! Thanks John
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Old Oct 31, 2005 | 12:18 PM
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Red line MTL shifts about the best I have seen. I use it in all my gearboxs. Truck 230,000 miles same fuild (tested -50 to 100 degrees) Shifts better than new. All cars that come in here for service work get Redline MTL.

Randy
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Old Oct 31, 2005 | 12:39 PM
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I use GM Synchromesh and have never had a problem with it and it really smoothed out the shifting effort for me.
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Old Oct 31, 2005 | 12:49 PM
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Originally Posted by Randy@DRM
Red line MTL shifts about the best I have seen. I use it in all my gearboxs. Truck 230,000 miles same fuild (tested -50 to 100 degrees) Shifts better than new. All cars that come in here for service work get Redline MTL.

Randy
I run RedLine MTL & Redline in the diff. as well and it shifted noticably smoother!
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Old Oct 31, 2005 | 07:13 PM
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As a note, the owner's manual requires a fluid that meets Dexron III specs for the C5/Z06.

I have been using the AMSOIL ATF for the last two seasons. Still on my original stock tranny (no rebuilds) after four years of hard track use.
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Old Oct 31, 2005 | 08:17 PM
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Hey Guys, how many quarts does it take??
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Old Oct 31, 2005 | 10:30 PM
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From: King George VA
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Originally Posted by NDRAG
Hey Guys, how many quarts does it take??
C5/Z06 manual tranny will take just under four quarts.
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Old Nov 4, 2005 | 04:37 PM
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Default Tranny fluid for the track

Originally Posted by Subdriver
As a note, the owner's manual requires a fluid that meets Dexron III specs for the C5/Z06.

I have been using the AMSOIL ATF for the last two seasons. Still on my original stock tranny (no rebuilds) after four years of hard track use.
Are you running race tires and do you have a tranny cooler? As soon as I switched to race rubber, the tranny overheated and shuck the teeth on my synchros. Hopefully, my mistake was in running stock fluid. I'm having the tranny rebuilt now and I'll put synthetic fluid in it.

Rich
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Old Nov 4, 2005 | 08:26 PM
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From: King George VA
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Originally Posted by rwarwick
Are you running race tires and do you have a tranny cooler? As soon as I switched to race rubber, the tranny overheated and shuck the teeth on my synchros. Hopefully, my mistake was in running stock fluid. I'm having the tranny rebuilt now and I'll put synthetic fluid in it.

Rich
Rich,
I do run DOT legal race tires, normally either Kumho V710, Hoosier R3S04, or Goodyear GS-CS and I do have a tranny cooler. I ran my first driver's education event without a tranny cooler and got a tranny high temp warning after a few sessions. Had a tranny cooler installed as part of my SCCA T1 preps.
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