4G TL (2009-2014)
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Gear oil review

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Old 07-10-2018, 02:20 AM
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Gear oil review

I came across this older gear oil review. I am sure someone has posted it before however https://www.lastgreatroadtrip.com/wp...comparison.pdf
At least as of 2010, it seems I have picked wisely.
When I owned a 85 RX-7 GSLSE (it is the original body type with the newer 1.3 (13b) engine vs 1.2 (12a) engine). The early 1st generation RX-7 had a 'scratchy' 2nd gear synchro, meaning when the manual transmission was cold, it was a labor to shift. You had to press hard to get it into 2nd gear.
Soon as it warmed up over a couple minutes of driving, it was fine. However when I changed to Amsoil synthetic gear oil, the problem was gone.
Old 07-10-2018, 06:24 AM
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Originally Posted by Anicra
I came across this older gear oil review. I am sure someone has posted it before however https://www.lastgreatroadtrip.com/wp...comparison.pdf
At least as of 2010, it seems I have picked wisely.
When I owned a 85 RX-7 GSLSE (it is the original body type with the newer 1.3 (13b) engine vs 1.2 (12a) engine). The early 1st generation RX-7 had a 'scratchy' 2nd gear synchro, meaning when the manual transmission was cold, it was a labor to shift. You had to press hard to get it into 2nd gear.
Soon as it warmed up over a couple minutes of driving, it was fine. However when I changed to Amsoil synthetic gear oil, the problem was gone.
I've had similar issues with other cars (BMWs, Mazdas, and VWs); switching to Red Line gear lube solved the issues every time. Had it not been for the overwhelming support for ACDelco Synchromesh Friction Modified for my 3G TL 6MT, I would have gone with Red Line for this car as well.
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