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Old 05-07-2020, 02:14 PM   #13 (permalink)
NissanZ34
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Join Date: Jun 2019
Location: Canada
Posts: 92
Drives: 2010 370z 6MT
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Quote:
Originally Posted by Cyber370 View Post
Yeah. I was gonna bring up the tranny fluid. Are you sure the right type and viscosity of fluid was used? That’s if it was ever changed. If not, then try changing it.

Wrong tranny fluid (if too slippery) can cause synchro issues.
Hello. I am having the same issue as OP.

I have just purchased some Redline Mt-85 and Redline 75w90. I am wondering if my transmission (synchros) is/are about to give up or I may just need a good oil change.

My car has about 30 000 miles but I beat on it pretty good. The car was shifting fine when I first got it but after 3500 miles it shifts clunky now.

The dealership mech said it's probably the synchros. They are able to order 1&2, 3&4 and 5&6 synchros in a "2 gear pack" or simply the whole transmission assembly. The synchros are back order at the moment but the transmission assembly is available for order but it's 2500$ though.

Redline fluids cost an arm so I'm wondering if I should just keep driving the car as it is for this season, OR have the transmission fluid changed for the oem oil for this season see if it helps in any way OR report the transmission swap for next season and have brand new oil and transmission together OR change the fluids now and hope for the best.

I really would not like to waste that Redline oil.

I thought my transmission rebuild would have only happened under forced induction... oops

Thanks for helping me out.
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