Rear end whine on NISMO Z, manual...

[zeroptzero]

I like the new Amsoil formulations as they updated all of their signature series oils. I've got two one-gallon jugs on order in signature series 5w30. I like the viscosity right around 10.2 cst, not overly thick and not thin, a nice dose of moly, and Noack volatility is super low (better for less valve deposits). Based on my seasonal driving I only have to do one oil change a season, so cost isn't an issue. I have their membership pricing saving three bucks a quart, with free shipping, and rewards points adding up. I put their severe gear 75w90 diff fluid in the rear recently, my car is a Sport Auto, I think it sounds quieter. I l like the Redline fluids too but the Amsoil stuff ships to me from Ohio quickly, and overall less cost. No tariffs yet (cross my fingers)

 

[Shumax]

Update. If you can believe this, the Z1 exhaust was touching the diff and transmitting the whine noise. It was adjusted and the noise is gone.

 

[KrackaC8]

Update. If you can believe this, the Z1 exhaust was touching the diff and transmitting the whine noise. It was adjusted and the noise is gone.

Good news!

 

[thesilverbullet]

Update. If you can believe this, the Z1 exhaust was touching the diff and transmitting the whine noise. It was adjusted and the noise is gone.

awesome - and the dealership said it was normal - lol