Originally Posted by patrickt
Use the GM Limited Slip Additive Part #1052358, now #88900330, (I use about seven ounces total) and a quart and a third of Moroso Climbing Gear Lube Part #34800, which is red in color. Do NOT remove the lower plug to drain the fluid. Instead, suck it out of the fill plug. I use a Plews 55001 Lubrimatic Fluid Quart Pump and surgical tubing.
Would be interested in any feedback regarding specific use of
Moroso 34800 in reference to this:
Here's the body content from the above link:
I installed CLIMBING GEAR LUBE! Moroso 34800 Gear Oil
I went to the track a few weeks ago and noticed rear end noise was louder
and on the street same result. Less than 1000 miles on car sense oil
So I decided I would go ahead and change the gear, I want to do this to slow
the car down for rules and also better street use and try to keep the car in
the 7.50 range for a new heads up class in Atlanta, GA.
Upon tear down and inspection I find, Every bearing is toast, the spider gear
idlers in the posi are goaled up. Had to cut the cross pin out with a gas wrench!
Wheels bearing have been running dry! Axles are toast!
After further consulting with some company's! This oil
should never be used in
a open differential, posi or oil bath lubed bearings as in a GM c-clip rear axle.
(Unless you put 3 total quarts in) Moroso denies any of this!
This oil has a high self adhesive additive (keeps the oil from slinging)
that lubes the ring gear and starves the other parts of the rear end.
Seems to be a known cause when talking to some differential builders.
It is also noted that other brand climbing gear oils do not have the self adhesive
additive,(keeps the oil bonded together) they have a material bonding additive,
attachés to parts. The oil will separate.The separation is what allows the oil to
travel down the axle and inside the differential. In talking with some other
company's that have climbing gear lube say, the Moroso oil gives the "CLIMBING"
name a bad one when used in stock configured differential. The biggest problem
they hear about is in the 4X4 guys.
The Moroso oil is used in "drag racing" a spool and seal axle bearing that require
no lube is sufficient.