2nd gear clunk, rubbing, grind

vin17 · 07-16-2014, 02:41 PM

Update: Mileage 2850

Changed out factory fill engine oil (Mobil 1), differential, and gearbox today at the dealership.
I replaced the factory fill gearbox oil (clean and clear) with MOTUL Gear 300 and the Differential (metal filings present) with Gear 300 LS.

Observations and experience: Gearbox is much smoother with MOTUL than OEM factory fluid - especially downshifting into 2nd and 1st. There is a noticeable decrease in previous clunking linkage sounds. Linkage noises are still there (design flaw) but not as loud, and shifting feels more precise.

Noticeable decrease in Limited Slip slapping/clunking noises, especially from 1st to 2nd.

I attribute these improvements directly to the MOTUL fluids.

I have a long trip coming up next week, so I'll get to feel and hear more over an extended time frame and over the interstates.

Update to follow.

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07-16-2014, 02:41 PM	#28 (permalink)
vin17 Base Member Join Date: Apr 2014 Location: Florida Posts: 16 Drives: 14 Nissan 370Z TS M6 Rep Power: 13	Update: Mileage 2850 Changed out factory fill engine oil (Mobil 1), differential, and gearbox today at the dealership. I replaced the factory fill gearbox oil (clean and clear) with MOTUL Gear 300 and the Differential (metal filings present) with Gear 300 LS. Observations and experience: Gearbox is much smoother with MOTUL than OEM factory fluid - especially downshifting into 2nd and 1st. There is a noticeable decrease in previous clunking linkage sounds. Linkage noises are still there (design flaw) but not as loud, and shifting feels more precise. Noticeable decrease in Limited Slip slapping/clunking noises, especially from 1st to 2nd. I attribute these improvements directly to the MOTUL fluids. I have a long trip coming up next week, so I'll get to feel and hear more over an extended time frame and over the interstates. Update to follow.