95Lwind05

iTrader: (6)

Hey guys, I have a 99 camaro ss, has a fairly fresh rebuilt rearend (1200 miles), with a Detroit Tru Trac carrier and detroit 3.73 gears. I changed the diff fluid a couple days ago and shortly after it started howling bad, worse then before fluid changed. I used 50% 75-90 gear lube with lucas heavy duty oil stabalizer and one bottle of gm diff. additive. I drove it around for an hour or so and saw a local ricer so I decided to beat on it. Shortly after the rearend is just howling something fierce. Its very loud outside even. Its deffinately not binding at all, and its pretty quiet until you get above 15 mph and let off the gas or brake. Any idea's or suggestions would be great. And the gears were put in by a professional, I just changed the fluid.

95Lwind05

iTrader: (6)

Any ideas or suggestions?? Anyone?

guppymech

iTrader: (7)

Lucas Heavy Duty oil stabilizer is not gear lube. Rear ends use gear lube with 4oz of friction modifier for the posi, please don't use homemade oil concoctions. It sounds like your gears might be toast.

95Lwind05

iTrader: (6)

It says on the lucas to use a 50/50 mix, I was going for a quieter rearend. And that's what the lucas supposably does. When I get home I will take the pumpkin cover off and look at them.

cowboysfan

50% lucas 75/90 gear lube with lucas heavy duty oil stabilizer, and then gm stabilizer. your oil is too thin!!!!

01ssreda4

iTrader: (96)

Lucas = Snake oil

Ditch that crap.

hitmanws6

iTrader: (20)

Get it out of there and put in a good brand of oil, you can use the 90W Lucas straight

wrd1972

iTrader: (12)

Ring and pinion need replacing.
Done.