gear oil for differentials

[purekoryo]

I will be using OEM Mitsubishi Diaqueen LSD Gear fluid SAE 90 for my EVO 9 transfer case and rear diff; however, I was wondering if I can use the same fluid for my S13 as well.

[g6civcx]

I will be using OEM Mitsubishi Diaqueen LSD Gear fluid SAE 90 for my EVO 9 transfer case and rear diff; however, I was wondering if I can use the same fluid for my S13 as well.

Good use of the semi-colon.

On which component of the S13 do you want to use the Diaqueen?

[racepar1]

Why do you want to use the diaqueen oil?

[bigtom]

redline shockproof heavy. has the friction modifier in it.

[purekoryo]

Why do you want to use the diaqueen oil?

because it comes in 1 gallon can, but I will only be using just a tad over .5 liter on the EVO.

[purekoryo]

Good use of the semi-colon.
that's as far as I can go in my English skills. Give me some math, and I will :2f2f: to the ground.

On which component of the S13 do you want to use the Diaqueen?

I just put some MT-90 in the tranny, but I want to use Diaqueen on my rear diff.

[Modrified]

fsm recommends gl5 gear oil on the diff. if it is i don't see why not. i like the mt-90 as well on my tranny.

[g6civcx]

I want to use Diaqueen on my rear diff.

This is my personal recommendation. Keep in mind that a lot of people don't have experience with Evos, or cars in general. Take it for what it's worth.

If you have a stock diff, Nissan recommends GL5 75W, 80W, 75W-90, 80W-90, 85W, 90, or 140 depending on the temperature. 80W-90 is preferred for most temps below 104*F. Consult the FSM for more details.

The Diaqueen is GL5 90. Nissan diffs are not as picky as Evos so you can use the Diaqueen if the temp is between freezing 32*F and 104*F.


If you have an aftermarket diff, the manufacturer recommends only using their brand of LSD fluid. Cheap people like to use conventional GL5 80W-90 and Ford friction modifier. I don't recommend this route but you can if you're short on cash.


My recommendation is conventional GL5 80W-90 for stock diffs and brand name LSD fluid (Kaaz, Tomei, etc.) for aftermarket diffs. Save your expensive Diaqueen for your Evo.

Others please feel free to comment.

[Pho Man]

I'm running 75w-90 Mobil 1 syn. In my Stock Rear Diff. right now. Eventually when I get my J30 installed will probably switch over to the Redline.

[bigtom]

fsm recommends gl5 gear oil on the diff. if it is i don't see why not. i like the mt-90 as well on my tranny.

i have had the mt-90 go thin when it gets hot and lost some trans missions. first thing to go was syncros then bearings. never tried it in a diff though.

Redline is GL-5 and will modify to 75-140 when hot.

[Massimo Power]

redline shockproof heavy. has the friction modifier in it.


No it doesnt have friction modifier in it. You have purchase it seperatly.

[purekoryo]

i have had the mt-90 go thin when it gets hot and lost some trans missions. first thing to go was syncros then bearings. never tried it in a diff though.

Redline is GL-5 and will modify to 75-140 when hot.

wait a minute, I thought MT-90 is the best fluid for our tranny. anyone else have had problems with the fluid? If so, I may switch to shockproof heavy duty, but I read that it was not good for our tranny long term.

[MAXIMUS_PR]

hey there is ton of information as not to use GL-5 on Nissan Transmissions here is the why



" What happens if API GL-5 gear oil is used in an API GL-4 gear oil application?

API GL-4 and API GL-5 products typically use the same extreme pressure (EP) additive system, with the API GL-5 having about twice the concentration of a API GL-4. In service, these additives become active under extreme load and temperature when the protective oil film can be squeezed away. EP additives work by forming wear-resistant compounds with the metal of the gear tooth surface. As the gears mesh, these compounds shield the gear teeth from direct metal-to-metal contact that would cause wear and damage to the gears. If too little of the active additive is present, proper protection would be compromised. Too much of this additive could cause excessive chemical corrosion of the gear surface. If an API GL-5 gear oil is used in a application where API GL-4 gear oil is called for, chemical corrosion of "yellow metal" components may occur, such as bronze synchronizers, brass bushings, etc. This may lead to shifting difficulties or shortened equipment life."

basically it will eat non ferrous metals inside your transmission(on a SR20det set up) switched to MT90 on the other transmission 2 years of abuse never ever broke down

redline,amsoil,castrol have GL-4 and some others

[initial_drifter]

like someone stated above I use the Heavy Duty Shock oil from Redline 75w-250

[g6civcx]

wait a minute, I thought MT-90 is the best fluid for our tranny. anyone else have had problems with the fluid? If so, I may switch to shockproof heavy duty, but I read that it was not good for our tranny long term.

My recommendation to you is to contact RedLine directly and ask their technician what they recommend for your application. Be sure you have your FSM handy so you can tell them what Nissan recommends and they can tell what they recommend as a replacement.

On my Evo, when I talked to RedLine they recommended a specific ratio of their fluids to achieve the recommended viscosity for the gearbox.

[JRas]

Mobil 1
75w-90

gets the job done and readily available at auto stores