rear diff fluid questions

[toyota85ae86]

Got an 87 supra turbo 5spd and well when you just rev and dump the clutch, it spins two tires and leaves two patches, but then if you take a corner and clutch kick ect ect and try to drift it only has one tire fire like an open diff.

so could it just need a fluid change? if so what kind? Got some redline mt90 for the tranny, what redline to match for the rear?

 

[Fletch124]

I cant answer your question but, dont dump the clutch anymore. Just slip the clutch.

 

[jdub]

Red Line 75W-90...it already contains the friction modifiers for an LSD.

 

[lilazni3uoy]

Got an 87 supra turbo 5spd and well when you just rev and dump the clutch, it spins two tires and leaves two patches, but then if you take a corner and clutch kick ect ect and try to drift it only has one tire fire like an open diff.

so could it just need a fluid change? if so what kind? Got some redline mt90 for the tranny, what redline to match for the rear?

whats the milage on the car? i think the lsd is probably worn bad.... sounds like my diff i need to rebuild mine

but as for the fluid, i'd just use the standard 75w90 redline

 

[Refib87]

The car is acctually mine and the milage on the car is about 140k miles, or around there. It could be that the lsd is worn out but it still operates on more than one occasions. The person i bought it from did run it hard tho. Ill have to take it apart to check on it.

Thanks for the right gear oil.

 

[IJ.]

Lucky it's not a Front Diff problem....... :nono:

 

[Refib87]

No problems there ^_^. Though the person who tried to lower this car did a way shitty job and totally fcked the alighnment on it. That could add to my rear end problems casue the tires are WAY off.

 

[Nick M]

What ever a clutch kick is...dumping the clutch while already in the turn?

 

[Poodles]

I run Ford gear lube with LSD friction modifier

never had an issue after that...

 

[jdub]

The Ford gear oil and friction modifier does work well...especially on an LSD with a lot of miles on it. Red Line can make a worn LSD noisy.

 

[lilazni3uoy]

friction modifier is not necessary on a high milage lsd

 

[jdub]

^^^ Care to explain why you say that?

 

[Poodles]

maybe if you're drifting and you like to wear your LSD faster...

 

[lilazni3uoy]

the clutches are already worn, they are not as agressive, so putting an additive on a worn lsd isn't really necessary, unless you like it to slip a bit and spend extra 6-7 bucks for a friction modifier :biglaugh:

 

[jdub]

LOL...ummm, not quite. Some friction modifier is required...that is unless your clutches are worn so much they slip constantly. If that's the case, you need a re-build...badly.

Friction modifier is there to provide slip when the LSD is in a turn...no friction modifier and you risk locking the LSD up.

 

[Poodles]

you'll skip around corners without enough, if you're serious into drag racing or drift, you don't want friction modifier (but you don't care about destroying the clutch pack anyway at this point)