pewterta

iTrader: (6)

i was wanting to try a heavier gear lube (by royal purple) 85-140
i want to see if i can tone down the whining im getting at 40mph and up...

is it ok..or has anyone had any luck.?

also 1 bottle of additive or 2 ? i hear people do both!

thanks!

mzoomora

iTrader: (36)

You can do either one or two bottles of additive, on a 12 bolt I would go 2. As far as the heavier gear lube, it will quiet it some, but not much. If it whines its the gears or bearings, seieng as how it hapens only at a certain speed, it is the gear set. Probably poor set up, but it could also be a defective gear. You can try the lube though, what would you have lost. But, I wouldnt expect much. If the noise isnt too bad, it probably isnt a bad idea.

pewterta

iTrader: (6)

defective gear? i have only whine on acceleration...no decel whine.... only have about 200 miles on the rearend...is it possible that i tighted something too tight?? liek the drive shaft or something????

mzoomora

iTrader: (36)

It is probably more due to bad set up. Sometimes the gears can be lapped poorly, so they dont mesh quite the way they should. Did you set it up yourself? Some howl or whine under drive, some on coast or decceleration. It would have to be checked out.

pewterta

iTrader: (6)

moser did the install of gears

1fastWS6

iTrader: (3)

I switched to 85-140 and it didn't make a bit of difference on the gear whine. Also, you can't run synthetic gear oil with the Eaton posi that Moser uses. It will ruin the clutches.

Moser setup is hit or miss. Mine was a miss and the gears whined terribly from day one. Also, the gears they use (US Gear) are not designed to run quietly.

If you can't stand the noise, your best bet is to buy a new set of Motive Gears and have them setup by a qualified tech.