Redline for M7
Thread Starter
Racer
Joined: Jan 2020
Posts: 394
Likes: 197
From: NH / RI
Redline for M7
I want to use Redline in my 2015 Z51 M7. I see that the GM (Delco) oil is #88861800, but I can't find the weight and other specs on it.
What is the viscosity of the GM oil and which Redline should I use?
Thanks
What is the viscosity of the GM oil and which Redline should I use?
Thanks
Race Director
Joined: Jan 2014
Posts: 10,709
Likes: 7,101
From: Fulshear, TX
Redline D4 ATF is the proper fluid for our M7. Definite improvement in shift quality. You can get a gallon jug for under $50; you'll need most of it.
https://www.corvetteforum.com/forums....php?t=3800362
https://www.corvetteforum.com/forums....php?t=3800362
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Race Director
Joined: Apr 2000
Posts: 15,344
Likes: 4,009
From: Texas
I also used D4 ATF in my 2013 GS with the same positive results. The TR6060 6 speed manual in the later C6s is the predecessor to the TR6070 in the C7.
Safety Car
Joined: May 2016
Posts: 4,488
Likes: 1,028
From: MN
I changed mine, and, like most others, used a little under 1 gallon. Theory is that the transmission does not completely drain, so you need a little less than the specs. Nice change, by the way.
Drifting
Joined: Oct 2012
Posts: 1,332
Likes: 267
From: Ft. Lauderdale, FL
For those that have changed the fluid to something other than GM fluid, has anyone noticed any effect different at WOT shifting at redline?
If the fluid is too slippery, it might shift good at low RPM shifts, but at high RPM fast shift, the synchro's might not line up and you might get a missed shift. Has anyone noticed this happening with fluid other then GM?
If the fluid is too slippery, it might shift good at low RPM shifts, but at high RPM fast shift, the synchro's might not line up and you might get a missed shift. Has anyone noticed this happening with fluid other then GM?
Race Director
Joined: Apr 2000
Posts: 15,344
Likes: 4,009
From: Texas
For those that have changed the fluid to something other than GM fluid, has anyone noticed any effect different at WOT shifting at redline?
If the fluid is too slippery, it might shift good at low RPM shifts, but at high RPM fast shift, the synchro's might not line up and you might get a missed shift. Has anyone noticed this happening with fluid other then GM?
If the fluid is too slippery, it might shift good at low RPM shifts, but at high RPM fast shift, the synchro's might not line up and you might get a missed shift. Has anyone noticed this happening with fluid other then GM?
Drifting
Joined: Nov 2013
Posts: 1,503
Likes: 600
Redline D4 ATF Is what I used in both my M6 and M7, great for cold weather shifting and helping the 1, 2, and 3, shifts.. The MGW on top also helped...
https://www.redlineoil.com/d4-atf
https://www.redlineoil.com/d4-atf