Transmission fluid.

Technical and Repair Discussions

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PostPosted: Mon Mar 20, 2017 3:01 pm
For what it's worth, I have 2-1/2 quarts of this stuff in the gearbox, and it's shifting faster and better than it's ever shifted.

https://www.amazon.com/Red-Line-Lightweight-Shockproof-Oil/dp/B000CPI5YG

I'm running Gen 3, original clutch and helical (not new straight-cut) gearset. Sure, the whole box might eat itself next time out, but it's so smoooooooooth. :shock:

Novice Typer
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PostPosted: Mon Mar 27, 2017 9:36 am
I thought we were supposed to run 3 quarts, no more, no less. Am I mistaken? I'd very much like to fix that before MARRS 1 if I am.
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PostPosted: Mon Mar 27, 2017 10:38 am
Fill until your level is to the middle of the speedometer gear. Some prefer to run a little less, but I prefer to have the safety margin in the event of a leak.
Bob Breton - SRF 51 - San Francisco Region

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PostPosted: Mon Mar 27, 2017 3:56 pm
We used to run 2 QT. on the G2 so if you pulled out the axles there was no mess. Mr. D specifically recommended to me to run 3 Qts., due to the higher loads and more RPM the engine spins the gearbox with the G3.
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PostPosted: Mon Mar 27, 2017 5:02 pm
I believe in following the advice of the guy who built the trans. :)
Dave Harriman
"It looks crazy, I understand. But, we only live once and I am going to give it a good try." - Alex Zanardi
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PostPosted: Mon Apr 03, 2017 2:25 pm
When I talked to the guys at Red Line Synthetic they recommended D4 ATF for the transmission.
James Chartres
SRF #77 - Chassis #501
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PostPosted: Tue Apr 04, 2017 10:56 am
Once you get a gearbox rebuilt with the new gears, you may want to talk w/ Nikki at Enterprises. I believe there was a specific fluid they were suggesting, but I'll defer to Nikki on further communications.
Dan
Teamwork Motorsports #99
Chassis #460

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PostPosted: Tue Apr 04, 2017 4:13 pm
The explanation that made the most sense to me (from a trans rebuilder) was that the transmission was used in Fords and Mazdas. Ford spec'd an ATF because it was better in cold weather. Mazda spec'd a manual trans lube. So when used in the SRF, they went with the Ford recommendation. If it was SRMazda, we'd probably all be using gear lube.

It's a non-exotic, non-LSD, synchro street gearbox. I think it's multiple choice question, and all answers are acceptable.

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