Differential fluid options... looking for better opinions.
#1
Rotary Enthusiast
Thread Starter
Differential fluid options... looking for better opinions.
Hey guys,
Ive being reading up on what fluid to put in my Diff.
After searching and reading for 20 minutes on the forums i came to the general concensus that people use 75w-90 in various brands. However i dont really trust jo-blow and bobs advise on this one.
However the FSM says:
DIFFERENTIAL:
Grade: API service GL-4 or GL-5
Viscosity (Below 0F): SAE 90
Viscosity (Above 0F): SAE 80
Capacity: 1.38 US qts
I tried looking around for SAE 80 today but no luck. I guess its a mazda fluid...
So i guess my question is.. what oil be compatible with the factory LSD and such.
I would like to hear from you experianced guys out there.
Thanks in advance.
=Ben
Ive being reading up on what fluid to put in my Diff.
After searching and reading for 20 minutes on the forums i came to the general concensus that people use 75w-90 in various brands. However i dont really trust jo-blow and bobs advise on this one.
However the FSM says:
DIFFERENTIAL:
Grade: API service GL-4 or GL-5
Viscosity (Below 0F): SAE 90
Viscosity (Above 0F): SAE 80
Capacity: 1.38 US qts
I tried looking around for SAE 80 today but no luck. I guess its a mazda fluid...
So i guess my question is.. what oil be compatible with the factory LSD and such.
I would like to hear from you experianced guys out there.
Thanks in advance.
=Ben
#3
Will work for horsepower
You can get a lot of diffrent responses, i use royal purple trannie and diff. I run the clutch style t11 and royal purple has the clutch aditive for the diff. Some like neo. With a 1.52 60 ft i cant complain, stock components and still holding up!
#6
Original Gangster/Rotary!
iTrader: (213)
Amsoil 75w90.
2.6 qts for the tranny, 1.6 qts for the diff, IIRC.
http://www.amsoil.com/storefront/svg.aspx
2.6 qts for the tranny, 1.6 qts for the diff, IIRC.
http://www.amsoil.com/storefront/svg.aspx
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#9
Eats, Sleeps, Dreams Rotary
iTrader: (14)
Better opinions that what?
Since these cars are 15 years old and (short of 400+ whp drag runs with slicks) differential failure is pretty much unheard of I would guess that there is nothing new to be learned here. Any common suggestions you read on older threads should be perfectly valid.
Since these cars are 15 years old and (short of 400+ whp drag runs with slicks) differential failure is pretty much unheard of I would guess that there is nothing new to be learned here. Any common suggestions you read on older threads should be perfectly valid.
#10
Rotary Enthusiast
Thread Starter
Better opinions that what?
Since these cars are 15 years old and (short of 400+ whp drag runs with slicks) differential failure is pretty much unheard of I would guess that there is nothing new to be learned here. Any common suggestions you read on older threads should be perfectly valid.
Since these cars are 15 years old and (short of 400+ whp drag runs with slicks) differential failure is pretty much unheard of I would guess that there is nothing new to be learned here. Any common suggestions you read on older threads should be perfectly valid.
Negative.
I do not want premature LSD or diff failure. I want the RIGHT oil or damn close to it, not whatever jo-blow says. Most people are too lazy to be bothered with doing a little research so they just assume things... "oh ya im sure this stuff will work fine... im not going to mazda to get the right stuff." Assumption is very closely related to ignorance, and ignorance is a dangerous thing.
Originally Posted by Busted7
You can get a lot of diffrent responses, i use royal purple trannie and diff. I run the clutch style t11 and royal purple has the clutch aditive for the diff. Some like neo. With a 1.52 60 ft i cant complain, stock components and still holding up!
What is this 'diff/lsd' additive i keep heaing about?
Originally Posted by Mahjik
Find a decent synthetic lubricant rated 75W90 which you can buy locally. I use Royal Purple as the local NAPA stocks it. If you have Redline, Royal Purple or any of the other big names locally, use it.
Thanks to everyones comments, greatly apreciated.
=Ben
#11
Eats, Sleeps, Dreams Rotary
iTrader: (14)
Spare me the tiresome condescension. Are you familiar with the work 'empirical'? These cars have been around since the early '90s and many have 150k+ miles on them and most of these cars are treated pretty badly by people who can't afford to maintain them. Yet, premature differential failure is pretty much unheard of. Any person with an IQ above 50 should be able to conclude the obvious. You need to find something else to worry about.
#12
Rotary Enthusiast
Thread Starter
Spare me the tiresome condescension. Are you familiar with the work 'empirical'? These cars have been around since the early '90s and many have 150k+ miles on them and most of these cars are treated pretty badly by people who can't afford to maintain them. Yet, premature differential failure is pretty much unheard of. Any person with an IQ above 50 should be able to conclude the obvious. You need to find something else to worry about.
Well my car has 76000 original km's with full service records... I would like to keep it as mint as possible.
Most empirical advise is without MUCH experiance, refer to first post "I would like to hear from you experianced guys out there."
As far as worring, it is obvious that you have nothing to do with your time then to flame posts... you need to find something else to DO!! Ive read all of the old posts about this topic, and i still wanted better opinions after reading those, obviously they were not sufficient.
Anywho, thanks for all the USEFUL posts from the rest of you fine members.
=Ben
#13
Will work for horsepower
The aditive i was talking about is for clutch style diffs like the t11, the torson does not need this aditive but royal purple has it any way. I have been abusing rx7's for 8 years and yet to break a diff but 1.52 60 ft times is pushing it.
#15
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Join Date: Apr 2003
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pretty much any 75w-90 gear oil from reputable company's will be ok. your diff isnt going to fail because you used mobil 1 75w-90 instead of neo 75w-90. get the viscosity right and it will be ok
i used neo in the past and have no complaints. however im switching to motul just to see how that goes.
i used neo in the past and have no complaints. however im switching to motul just to see how that goes.
#16
Moderator
iTrader: (7)
I do not want premature LSD or diff failure. I want the RIGHT oil or damn close to it, not whatever jo-blow says. Most people are too lazy to be bothered with doing a little research so they just assume things... "oh ya im sure this stuff will work fine... im not going to mazda to get the right stuff." Assumption is very closely related to ignorance, and ignorance is a dangerous thing.
SAE 80 is a viscosity. So 75w-90 is a valid viscosity for a diff. If you typically do heavy track work that really builds high diff temps, consider a 80w-140 so that it's not too thin at operating temperature.
I believe the most important property aside from viscosity is the EP additive package. You might consider something like Redline Shockproof series and change it every 10k or 20k if you are vitally concerned about it. If you want to get hardcore, head over to the bobistheoilguy.com and ask about torsens.
What is this 'diff/lsd' additive i keep heaing about?
In a torsen, the mechanical friction of the worm gears is what causes the traction in a turn. I'm not sure in a torsen what effect ls additive has, how much to use, etc. Mazda doesn't specify it.
Well the Royal Purple 75w90 i just bought for my tranny does say 'Limited slip' on it. And the other side of the bottle says "Contains limited slip additive", so obviously i guess Royal Purple formulated this gear oil for LSD differencials/trannies.
Thanks to everyones comments, greatly apreciated.
=Ben
Thanks to everyones comments, greatly apreciated.
=Ben
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