That crap stinks. Save it and if someone messes with you, you can pour it in their mailslot in the middle of the night. Their house will stink forever. =P
Dont use synthetic oil if your gears whine. They will whine worse. Synthetic is very thin and will enhance the problem. Use heavy gear oil 90 weight or even heavier and it will cusion and quiet things down a bit but cost you power. Mr yount is right, this is just a duct tape solution and whining gears mean something in there is failing. With the amount of force on those gears, it's a matter of time before they heat up and seize with spectacular results. I locked a rear end before on 495 going 75 mph. Car went EEEEEEEEEEEEE then started turning and then did the the trademark mustang spin and then spun off the highway onto the little triangle of grass between an exit and an onramp. I was insanely lucky nobody hit me or I didnt hit anyone. That was a siezed T-5 from a cocked input shaft but the principle is the same. You dont want your drivetrain seizing.
Oh, btw, if your gears are whining and there are enough miles in the rear to make that happen, your tracloc is toast and you basically have the equivalent of an open diff. Adding friction modifier will accomplish nothing.
btw2: Synthetic has "built in" friction modifer. The redline stuff tells you not to add FM when using RL synthetic gear oil. Check you gearoil label before you put yourself through the horror of using friction modifier. It's the FM that stinks, the gear oils are just pleasant oily smell.
Dont use synthetic oil if your gears whine. They will whine worse. Synthetic is very thin and will enhance the problem. Use heavy gear oil 90 weight or even heavier and it will cusion and quiet things down a bit but cost you power. Mr yount is right, this is just a duct tape solution and whining gears mean something in there is failing. With the amount of force on those gears, it's a matter of time before they heat up and seize with spectacular results. I locked a rear end before on 495 going 75 mph. Car went EEEEEEEEEEEEE then started turning and then did the the trademark mustang spin and then spun off the highway onto the little triangle of grass between an exit and an onramp. I was insanely lucky nobody hit me or I didnt hit anyone. That was a siezed T-5 from a cocked input shaft but the principle is the same. You dont want your drivetrain seizing.
Oh, btw, if your gears are whining and there are enough miles in the rear to make that happen, your tracloc is toast and you basically have the equivalent of an open diff. Adding friction modifier will accomplish nothing.
btw2: Synthetic has "built in" friction modifer. The redline stuff tells you not to add FM when using RL synthetic gear oil. Check you gearoil label before you put yourself through the horror of using friction modifier. It's the FM that stinks, the gear oils are just pleasant oily smell.