What's the best diff fluid for 3.76LSD? Read through many old threads!
#1
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So, I searched a crapload and some threads say that friction modifiers are needed and some say that friction modifiers are NOT needed for this diff...which is it?
I have the 3.76 LSD (Supra TT; Torsen type LSD). I currently have 75w90 Royal Purple Gear Lube in there and it seems to work OK but every once in a while I hear noises from the rear end...especially during slow turns (i.e. parking lots). The unit was brand new and I never changed out the initial fluids...I think I read somewhere that after the first 1000-2000 miles it should be changed out if the unit was brand new; perhaps to get rid of metal shavings and etc. So, I am changing some other fluids soon so i figured I would change the diff fluid as well.
What do you guys think? Thanks!
I have the 3.76 LSD (Supra TT; Torsen type LSD). I currently have 75w90 Royal Purple Gear Lube in there and it seems to work OK but every once in a while I hear noises from the rear end...especially during slow turns (i.e. parking lots). The unit was brand new and I never changed out the initial fluids...I think I read somewhere that after the first 1000-2000 miles it should be changed out if the unit was brand new; perhaps to get rid of metal shavings and etc. So, I am changing some other fluids soon so i figured I would change the diff fluid as well.
What do you guys think? Thanks!
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#2
Lexus Test Driver
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In the past, I used to change out the supra TT rear diff with royal purple or redline fluid. But I was once given two quarts of amsoil gear oil and changed it out in my car in which I felt a noticeable difference in noise. FWIW, I change out my rear diff fluid every 25k miles/2 year.
#3
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In the past, I used to change out the supra TT rear diff with royal purple or redline fluid. But I was once given two quarts of amsoil gear oil and changed it out in my car in which I felt a noticeable difference in noise. FWIW, I change out my rear diff fluid every 25k miles/2 year.
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#7
Pole Position
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I listened to them and went with the Valvoline and as of now no noises or any issues. They told me that its not needed to run the $17/bottle royal purple unless you like wasting money. Now don't get me wrong cause I do use royal purple engine oil, but something so simple and mechanical as a torsen rear diff..I could see their reasoning.
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#9
Lexus Test Driver
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I agree with Alexus 300. Amsoil FTW! I am getting ready to do my 60K and I will be switching over to all Amsoil fluids.
http://www.amsoil.com/company.aspx
http://www.amsoil.com/video/company/index.aspx
http://www.amsoil.com/company.aspx
http://www.amsoil.com/video/company/index.aspx
#10
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I listened to them and went with the Valvoline and as of now no noises or any issues. They told me that its not needed to run the $17/bottle royal purple unless you like wasting money. Now don't get me wrong cause I do use royal purple engine oil, but something so simple and mechanical as a torsen rear diff..I could see their reasoning.
but I didn't pay for the RP
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No complains here.
#12
Lexus Test Driver
iTrader: (4)
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I agree with Alexus 300. Amsoil FTW! I am getting ready to do my 60K and I will be switching over to all Amsoil fluids.
http://www.amsoil.com/company.aspx
http://www.amsoil.com/video/company/index.aspx
http://www.amsoil.com/company.aspx
http://www.amsoil.com/video/company/index.aspx
#13
Lexus Fanatic
iTrader: (182)
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For those that don't know, Amsoil is one of the very few companies that I know of that makes a 75w-140 gear oil. There pricing is actually cheaper than Royal Purple if you get it through one of their dealer with a discount. I think I pay around $10/quart and if I purchase in large quantities, I get an additional 15% off which comes out to be pretty cheap.