Rear end lubrication
#1
Rear end lubrication
ok so i have a 02 gt 5spd..... it has 70k on it now, and i notice that every once in a while when i take a ride turn hard.... only that wheel spins........ so i guess the friction modifier for the limited split discs is worn out.... what fluid do i need to put in it so they will grab again.... i was thinking the royal purple, but does that have the necessary friction modifier additive that i need?
#4
No!
Friction modifier makes the oil more slippery so that the clutch plates do not bind--adding more will make it slip more...
"Back in the day" a cheap trick for the strip was to use less friction modifier (or even none on a trailered racer) to get more lock-up. With none, on the street, the clutch packs will pop and creak and make a general racket.
Friction modifier makes the oil more slippery so that the clutch plates do not bind--adding more will make it slip more...
"Back in the day" a cheap trick for the strip was to use less friction modifier (or even none on a trailered racer) to get more lock-up. With none, on the street, the clutch packs will pop and creak and make a general racket.
#6
You don't need FM with any synthetic gear oil--not really because it already "has it", but because the synthetic oil in inherently "slipperier" then dino oil.
Adding FM to synthetic gear oil will further lessen the clutch packs' ability to lock up.
Adding FM to synthetic gear oil will further lessen the clutch packs' ability to lock up.
#7
Agreed, and well stated CliffyK .
#9
I agree...
Most likely, fluid isnt the issue. These 8.8s take a lot of abuse, and people seem to forget about the clutch packs back there. I know my car needs a rebuild... I bet thats what your rear could use. I've even heard of people adding extra discs in there to make it lock up better, but driveability may be hindered..
#10
If so and I knew the LSD had not been abused, or had a ton of miles, then I'd drain whatever is in there out, fill the pumpkin with straight 75W-140 dino juice (no FM), and drive it for a bit.
This is a bit of a kludgy/sleazy "fix", however the friction plates may be so loaded with FM and synthetic oil that they will "dry out" and start to do what they are supposed to do--and if they start to bind (you will know it if they do) you could throw in a couple ounces of FM...
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Dragonus18
4.6L (1996-2004 Modular) Mustang
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09-09-2015 01:21 AM