Which synthetic differential fluid for LSD
Thread Starter
Lexus Test Driver
Joined: Dec 2001
Posts: 1,074
Likes: 3
From: New Jersey
Which synthetic differential fluid for LSD
For those of you with 3.76 LSD or TRD LSD which kind of synthetic rear differential fluid are you using or can recommend.
There are so many on the market with all different grades
For example:
mobile 1
Castrol GTX Gear Oil 75W90
Valvoline
Royal Purple MAXGEAR 75W90
Amsoil
Redline 75w90 which has the additive and 75w90s no additive or 80w140
gets very confusing on which one to choose and in which grade with or without LSD additives, etc. .... Any recommendations?
There are so many on the market with all different grades
For example:
mobile 1
Castrol GTX Gear Oil 75W90
Valvoline
Royal Purple MAXGEAR 75W90
Amsoil
Redline 75w90 which has the additive and 75w90s no additive or 80w140
gets very confusing on which one to choose and in which grade with or without LSD additives, etc. .... Any recommendations?
Lexus Champion
Joined: Sep 2001
Posts: 1,808
Likes: 1
From: California
Re: Which synthetic differential fluid for LSD
Originally posted by DrewGS4
For those of you with 3.76 LSD or TRD LSD which kind of synthetic rear differential fluid are you using or can recommend.
There are so many on the market with all different grades
For example:
mobile 1
Castrol GTX Gear Oil 75W90
Valvoline
Royal Purple MAXGEAR 75W90
Amsoil
Redline 75w90 which has the additive and 75w90s no additive or 80w140
gets very confusing on which one to choose and in which grade with or without LSD additives, etc. .... Any recommendations?
For those of you with 3.76 LSD or TRD LSD which kind of synthetic rear differential fluid are you using or can recommend.
There are so many on the market with all different grades
For example:
mobile 1
Castrol GTX Gear Oil 75W90
Valvoline
Royal Purple MAXGEAR 75W90
Amsoil
Redline 75w90 which has the additive and 75w90s no additive or 80w140
gets very confusing on which one to choose and in which grade with or without LSD additives, etc. .... Any recommendations?
]
Thread Starter
Lexus Test Driver
Joined: Dec 2001
Posts: 1,074
Likes: 3
From: New Jersey
Thanks guys for the information. I checked over on the supra forums and most of the guys are running amsoil or redline oil.
Hameed....i only use OEM toyota fluid for my transmission and the red toyota coolant. No substituting those fluids with anything synthetic or generic versions. But with engine oil and rear differential people say that synthetic is better for optimal performance.
I guess you can never go wrong with mobile 1. I am leaning more towards royal purple or valvoline.
I think the main thing is that you change the oil out frequently since it only takes 1.5 quarts on the supra LSD. The gears churn and churn so fast which is only being lubricated by 1.5 quarts which results in the oil getting dirtier and burnt quicker.
Hameed....i only use OEM toyota fluid for my transmission and the red toyota coolant. No substituting those fluids with anything synthetic or generic versions. But with engine oil and rear differential people say that synthetic is better for optimal performance.
I guess you can never go wrong with mobile 1. I am leaning more towards royal purple or valvoline.
I think the main thing is that you change the oil out frequently since it only takes 1.5 quarts on the supra LSD. The gears churn and churn so fast which is only being lubricated by 1.5 quarts which results in the oil getting dirtier and burnt quicker.
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Lexus Test Driver
Joined: Jun 2002
Posts: 869
Likes: 1
From: California
Personally, I don't believe there is any real need to change the gear lube in the rear end frequently. It shouldn't get dirty and burnt (as you suggested) IMO- unless there is something wrong.
The rear diff. is not like your engine oil where it is subject to extreme temps, combustion contamination etc.
I guess under extreme conditions (i.e. racing) it might be a good idea to change it more frequently...
I could be wrong on this; have to check into the issue more.
The rear diff. is not like your engine oil where it is subject to extreme temps, combustion contamination etc.
I guess under extreme conditions (i.e. racing) it might be a good idea to change it more frequently...
I could be wrong on this; have to check into the issue more.
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Originally posted by FutureGS400
Personally, I don't believe there is any real need to change the gear lube in the rear end frequently. It shouldn't get dirty and burnt (as you suggested) IMO- unless there is something wrong.
The rear diff. is not like your engine oil where it is subject to extreme temps, combustion contamination etc.
I guess under extreme conditions (i.e. racing) it might be a good idea to change it more frequently...
I could be wrong on this; have to check into the issue more.
Personally, I don't believe there is any real need to change the gear lube in the rear end frequently. It shouldn't get dirty and burnt (as you suggested) IMO- unless there is something wrong.
The rear diff. is not like your engine oil where it is subject to extreme temps, combustion contamination etc.
I guess under extreme conditions (i.e. racing) it might be a good idea to change it more frequently...
I could be wrong on this; have to check into the issue more.
Originally posted by grnstreak
I don't recommend using synthetic oil in a clutch type LSD. Synthetic is too slippery for the friction surfaces.
I don't recommend using synthetic oil in a clutch type LSD. Synthetic is too slippery for the friction surfaces.
Lexus Test Driver
Joined: Jun 2002
Posts: 869
Likes: 1
From: California
Redline makes good products IMO, I've used some of their stuff over the years..
The friction additives are only for LSDs using the clutch/cone type of mechanism (e.g. TRD ). Not necessary for the Torsen (gear type LSD) as far as I know. Probably doesn't hurt anything, just not needed.
The friction additives are only for LSDs using the clutch/cone type of mechanism (e.g. TRD ). Not necessary for the Torsen (gear type LSD) as far as I know. Probably doesn't hurt anything, just not needed.
Joined: Feb 2001
Posts: 31,944
Likes: 2,737
From: North Carolina
Originally posted by grnstreak
I don't recommend using synthetic oil in a clutch type LSD. Synthetic is too slippery for the friction surfaces.
I don't recommend using synthetic oil in a clutch type LSD. Synthetic is too slippery for the friction surfaces.
I've used the Redline in my TRD LSD for a couple of years. definitely good stuff. Also use their water wetter product.
