transmission Oil?

[Gogolinskiy]

Changed my clutch yesterday,so why not change the transmission oil,drained it.It look like normal engine oil but i am still skeptical about it.Guys what oil should i use for 5 speed transmission?Thx.

[seang]

I hear Redline MTL is good stuff.

I was reading that sulfides are what is bad for the brass synchros, and should be avoided.

There is also this stuff made by GM performance called "GM synchromesh fluid" that interests me. If you google it, there are alot of great reviews, in imports and domestics alike.

[Gogolinskiy]

The GM one is really good,even the s2k use them in their trannys,but its way to expensive.i will research on the other one.Thank you.

[Rev_D21]

I run MTL and it shifts smooth.

[PEZi]

i use GL-4.... AMSOIL gear lube 75W-90

[Gogolinskiy]

MTL it is,hey guys how many litres does KA transmission need?thx

[EstoMax]

redline mt-90 is 75w90 and mtl is 70w80. I personally am using the Mt-90, as i have used that in all my previous cars. The MTL is a little lighter, both are GL 4 however. oil cap:

FS5W71C:2wd: 2.0 liters4wd: 4.0 litersFS5R30A:2wd: 2.4 liters4wd: 3.6 liters

change your differential oils out too while you're at it, you want to put GL5 in your differential, so redline 75w90 gear oil or the 75w85 if you want a little lighter. i use 75w90 personally.

front:R180A: 1.3 litersR200A: 1.5 liters

rear:H190A: 1.5 litersC200: 1.3 litersH233B: 2.8 liters

i just changed all my oils afer driving the truck, the transaxle oil was the messiest to change because of the fill plug location.. (if you had 4wd.. it takes ATF, so change that too (2.2 liters))

cheers,Marko

[seang]

i just changed all my oils afer driving the truck, the transaxle oil was the messiest to change because of the fill plug location.. (if you had 4wd.. it takes ATF, so change that too (2.2 liters))

Don't you mean transfer case? At the moment, I use ATF in mine as well. Shift on the fly FTW. My transfer shifts into, and out of, 4wd easier than the 5sp shifts through the gears, even at highway speeds. Never try that with 4lo, you have to stop for that.

It is commonplace to overfill the 4wd FS5W71C, either through the shifter hole, or through the fill plug by jacking the truck up on one side. The factory fill plug is too low.

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*Update* Here is a quote from Jed @ NOR....

"When adding fluid to the transmission, I poured into the shifter hole (which can be accessed by removing the shifter [remove boot, splash guard, shifter grommet, and snap ring, lift shifter from transmission]) and added an extra 3/4 quart of oil to make sure the transmission had enough to lubricate the main shaft bearing set in the adapter plate, and the front main transmission bearing which was what actually failed before I rebuilt the transmission.

The transfer case is very difficult to access and fill, an extra set of hands, a funnel, and a rubber tube is necessary. To remove fill/drain plugs on the transmission and transfer case, a 1/2" drive breaker bar can be used, and an extension is helpful on the transfer case. Be sure to return the drain plug with the magnet on the bottom of both cases.

Transmission oils must be GL-4, and are very difficult to find at parts stores (in any viscosity). When I replaced my clutch 10k miles ago, I had to drive 2 hours to find a GL-4 in as thin viscosity as I could find, alas, I had to go with 85w90, which was a bit thicker than what I had in mind. When I rebuild the transmission, I went with RedLine MT-90 which is a full-synthetic 75w-90 GL-4, safe for use in Nissan transmissions.

A good rule of thumb is, keep the same oil in your transfer case as is in your transmission, reason being, if the seal between the transfer case and the transmission goes out, transmission oil or ATF in the transfer case will not cause harm, however, transmission oil mixing with ATF or a GL-5 transfer case oil in the transmission can breakdown the brass synchros and be disastrous in an automatic transmission. Fill the transfer case till oil begins to come back out of the fill hole (which should be right at that 2-3/8 quarts measurement).

So, breaking that down a little, use a 75w-90 (or close) GL-4 to preserve synchros. Do not use a gear oil if there is GL-5 written ANYWHERE on the bottle.

Redline is available on Ebay and at SummitRacing.com, not to mention other dealers, perhaps local to your area. These specs are for the FS5W71C transmission which is found in most 86.5-97 Hardbody, which I believe the internals to be all the same. You may see them (rebuild kits) listed in separate year brackets, but the internals (synchros, bearings) are the same AFAIK. The above worked for a 1995 Hardbody 4x4, 2.4L 4-cyl, non-z."


Modified by seang at 6:37 PM 1/2/2010

[Gogolinskiy]

Thank you again guys...by the way as i said its RWD 5 spd.And one more thing,i think i got LSD in the back,spin both way unless you put a lot of force then it will slip(by hand)its either LSD or i just fried my rear diff after burnout and etc.

[seang]

Is your truck an SE? And if it does have a limited slip, I'm pretty sure you need to use special fluid. That's awesome if it does.

[Gogolinskiy]

no its not its just a regular ka24e.And the think is it has a power steering to ,with a small wheel(330mm) factory which is pretty weird to.