I'm just wondering to get an idea of what to use. If anyone knows the goods and bads about certain oils that would be helpful too but what do you recommend running?
What kinda LSD and R154 oil do you use?
- Thread starter 86_sports_1jz
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I use royal purple. My kaaz diff doesn't seem to like it, however the transmission is as smooth as a baby's butt.
I have yet to change my LSD but I will probably use redline and maybe an lsd additive. I have redline mt-90 in my r154 and it shifts much more smoothly.
Redline MT-90 for the tranny.
75/90-wt LSD differential carrier oil from Ford for the Diff. The diff oil is a tech tip I picked up from Reg Reimer years ago, tried it and it works. Here's his page on this: http://www.suprasonic.org/public_html/sonictech/mk3/mk3_pmtn.html
75/90-wt LSD differential carrier oil from Ford for the Diff. The diff oil is a tech tip I picked up from Reg Reimer years ago, tried it and it works. Here's his page on this: http://www.suprasonic.org/public_html/sonictech/mk3/mk3_pmtn.html
tissimo and i came to that conclusion that redline seems to slippery for the diff. his was fine till he ran redline and it eventually started to burn out and wasn't much of an LSD anymore
I used Royal Purple For Both
The MaxGear 75W90 . It also has a LSD Additive in it already. It has been running nice and smooth with it.
http://www.royalpurple.com/prodsa/mgeara.html
Also put Royal Purple in the Engine. It's good stuff and i find you can get it for much less then Redline. Well up here anyways.
The MaxGear 75W90 . It also has a LSD Additive in it already. It has been running nice and smooth with it.
http://www.royalpurple.com/prodsa/mgeara.html
Also put Royal Purple in the Engine. It's good stuff and i find you can get it for much less then Redline. Well up here anyways.
I use Royal Purple in both too. Shifting was much smoother then it was before fluid change, but that could be due to many things.
I have a torsion LSD as well if that makes a difference. I rememeber Reg getting all upset when I told him I just drained out the Toyota fluid, and filled it with something else, as apperantly Toyota (and Ford too) fluid has some special friction modifiers in them which are necessary for our clutch LSDs. He didn't realize I was running a torsion diff, and friction modifiers didn't really matter. If you run a clutch-type LSD, I would recommend keeping some of the stock fluid in there, or using a little of the Ford stuff
I have a torsion LSD as well if that makes a difference. I rememeber Reg getting all upset when I told him I just drained out the Toyota fluid, and filled it with something else, as apperantly Toyota (and Ford too) fluid has some special friction modifiers in them which are necessary for our clutch LSDs. He didn't realize I was running a torsion diff, and friction modifiers didn't really matter. If you run a clutch-type LSD, I would recommend keeping some of the stock fluid in there, or using a little of the Ford stuff
annoyingrob said:
Toyota and Ford have a LSD additive in there stuff. The royal Pruple has one as well i verified that it did before i bought the stuff and put it in. Otherwise your LSD would wine like crazy
let me chime in here a second...
1st... kaaz diffs require dinosaur juice, not synthetic... ask em...
2nd... why put friction modifiers in there... friction modifiers don't add friction, they make the oil slip more... not what you want from your clutch packs... unless you like inside wheel spin...
put the cheapest junk you can find in there... or redline no-slip if you need synthetic... that way... the clutches lock more and you get more grip... the way a diff was intended to work...
friction modifiers are added from the factory because people who just drive the car from point A to point B don't like a diff that goes "clunk, clunk, clunk..." everytime...
but as performance oriented enthusiasts, YOU do want that clunking sound...because it means the wheels are locking up...
you should hear the clunking when turning... visually, someone on the outside may see the inside wheel hop... as you are turning...
my TRD diff does this constantly and will tear up a lawn on the inside wheel... if i manuever the car around using that shortcut...
happy clunking to you...
Mike
ps...torsens are a different story... and would probably benefit from shockproof or the like... as they develop friction from the gears meshing...
1st... kaaz diffs require dinosaur juice, not synthetic... ask em...
2nd... why put friction modifiers in there... friction modifiers don't add friction, they make the oil slip more... not what you want from your clutch packs... unless you like inside wheel spin...
put the cheapest junk you can find in there... or redline no-slip if you need synthetic... that way... the clutches lock more and you get more grip... the way a diff was intended to work...
friction modifiers are added from the factory because people who just drive the car from point A to point B don't like a diff that goes "clunk, clunk, clunk..." everytime...
but as performance oriented enthusiasts, YOU do want that clunking sound...because it means the wheels are locking up...
you should hear the clunking when turning... visually, someone on the outside may see the inside wheel hop... as you are turning...
my TRD diff does this constantly and will tear up a lawn on the inside wheel... if i manuever the car around using that shortcut...
happy clunking to you...
Mike
ps...torsens are a different story... and would probably benefit from shockproof or the like... as they develop friction from the gears meshing...
Your TRD doesn't Whine Like theres no tomorrow?
Any stock Supra LSD i know of with out the friction modifiers Whines like crazy and is horribly annoying. Not just The Clutch pack going clunk but the gears in there whine without the modifiers
Any stock Supra LSD i know of with out the friction modifiers Whines like crazy and is horribly annoying. Not just The Clutch pack going clunk but the gears in there whine without the modifiers
TRD never whines nor do the several stock diffs i've had in there.... Switching to a good aftermarket diff was one of the best handling upgrades i ever did to the car... and yes, a TRD diff is not cheap... but it puts down power coming out of a turn like no stock diff has...
but i could be going deaf, too...
but i could be going deaf, too...
It didn't, at least not back when I bought it last, but I heard a rumor that Ford was adding it.MA717MGTE said:
c2m said:
I think you are Mike!
How was the AutoX? Sorry I didn't call you back, you know how busy I am.
BTW... Everyone you should Listen to (c2m)Mike. Take your note pads out and start writing!
Here is some pics of his resume:
Enjoy!
Read this thread in the oil section...search is your friend 
http://www.supramania.com/forums/showthread.php?t=44485
RP in the tranny can cause "issues" due to the friction modifiers in it....manual trannys *need* a certain amount of friction to work properly. Red Line MT90 is a much better choice.
IMO, for a LSD with a lot of miles on it...Ford 75W-90 + Ford friction modifier will work well. On a re-built or tight LSD...Red Line 75W-90.
Straight Red Line 75W-90 has friction modifiers in it as well...not a good choice for the same reason as RP. Red Line 75W-90NS will work though, but the MT90 is better. Any 75W-140 is way too thick for the Mk III LSD...don't do it...and you don't have to change grades of LSD oil depending on time of year. The above quote is just wrong
http://www.supramania.com/forums/showthread.php?t=44485
RP in the tranny can cause "issues" due to the friction modifiers in it....manual trannys *need* a certain amount of friction to work properly. Red Line MT90 is a much better choice.
IMO, for a LSD with a lot of miles on it...Ford 75W-90 + Ford friction modifier will work well. On a re-built or tight LSD...Red Line 75W-90.
speed dodici said:
Straight Red Line 75W-90 has friction modifiers in it as well...not a good choice for the same reason as RP. Red Line 75W-90NS will work though, but the MT90 is better. Any 75W-140 is way too thick for the Mk III LSD...don't do it...and you don't have to change grades of LSD oil depending on time of year. The above quote is just wrong