Can you pinpoint front or rear and which side? Sounds like a wheel bearing I just replaced on my G35x. Do you notice the noise changing going into corners at speed?
Is it fairly consistent at speed regardless of the pavement surface condition and age?
I’ve continued to use a 80w90 GL-5 in my ‘15 and replacing every 25-30k miles (~40,000–48,000 km)
IIRC.. you can get up to 50% power transfer to rear when needed but pre-load backed off from the ‘13-‘16.5 models to 0%.. starting with ‘17 I think for MPG
There were some articles on it years...
I think logic changed ‘17+ but Gen 1 keeps 1% pre-load of power on rear differential at all times as seen in FSM documentation from years back
Also Gen one owners need to make sure they have the water ingress TSB performed that can allow water from a car wash to enter the rear differential vent...
Sounds more like a valve cover for $180. If not hang onto that mechanic for his rates.. that’s near a single hour in my area. It’s some major work to re-seal the TC. Mine was resealed twice under warranty and it still weeps. I accepted just cleaning it up every few oil changes with some...
You can use any of the DC-to-DC chargers as well with some of the all-in-one power stations or standalone LiFePO4 batteries. I use both.. I tend to lean on LiTime for my standalone batteries among several off-grid solar installations totaling around 30,000Wh
You might check with this company to see if ‘25 will work. I have seen some discussion that output might get suppressed by vehicle ECU so not sure if that is still an issue.
https://www.powerbastards.com/proddetail.asp?prod=20288-250-HD3-6
If you are looking for a DC-to-DC charger I highly...
I don’t remember what year it changed or if it was simply start of Gen 2 but Gen 1 has about a 1% pre-load of power always sent to the rear diff. IIRC.. that was removed in later years