I just changed to Mobil 1 Syntheic 75w90 fluid in my 5 speed. Is this okay? Or should I have went with a different fluid?

 

I run 75w90 Amsoil, its a full synthetic.. should be good

 

Question: Is it easy to switch the fluid in a standard yourself, or does the shop need to do it? How long can tranny fluid go before it should be changed?

Ya I searched, but everyone is talking auto's.

 

yep, pull the plug, let it drain, fill it back up.

how often you change depends on use. wheeling in mud holes/water and your gonna want to change it often (incase you got some of that in it)

if your a pavement ponder i think its round 50K

 

I was told the Mobil 1 is to slippery for my syncros and I did notice that my shifting is more notchy now.

I'm gonna switch to RedLine MT-90 which is specifically designed for our trucks.

Do you guys just fill it up till it runs out the fill hole? Thats what I did. I torqued the fill and drain plug to 25 ft lbs.

 

When you drain be sure to take the fill plug out first, otherwise when you pull the drain plug it will spash everywhere when it sucks air back in...

In my 95 runner Amsoil was too slipery.. In my 92 I still have a 5spd but its a different one and works fine... Amsoil also make a transaxle/5spd fluid that is supposed to help. but I currently run the severe gear with no issues.

 

Don't forget to change the plug washers as well. People swear they reuse the old ones with no problems, but why chance it? They are cheap, so just do it.

 

I used the MT-90, Redline. Couldn't be happier. Get a hand pump, like sta-lube, when you do it. Makes it A LOT easier to get the fluid into the tranny. And let it sit in the sun for a while, to thin out, before pumping.

Any high-quality syn will be fine, but supposedly Redline engineers the MT-90 to be just for trannies ( brass synchros) and not for trannies AND diffs.

Good luck. S.

 

just how hard is it to change all the fuilds ??

 

Very easy, even if you're inexperienced... Just buy a Haynes book if you're unsure, and follow the procedure: It's really just drain and refill with the recommended fluids. Only need a few wrenches and a bucket and then take the old oil to Autozone. You can always buy the synthetics you want and have them installed by the local lube guys.

 

so can i just use 75w90 for every thing ? and haveing the fuilds changed around here is around $200 dollars

 

o wait i have a locker

 

I filled my diff up with Mobil 1 and it seems to be fine. Of course I just have a mini Tacoma and have a open diff. The Mobil 1 is approved for limited slips though. Check your manual to see what the locking diff needs.

I bought me a hand pump from summit to fill the tranny. I filled it last time with just a rubber hose on the cap nipple and I got soaked several times and actually had to buy an extra quart to replace the spilt fluid.

 

Better check the label on the product you purchased. I was getting ready to pour Redline 75W-90 in my manual gearbox until I saw the warning label indicating the product was not recommended for use in a synchromeshed transmission. I returned it and bought Redline MT90, which is specifically meant for use in manual transmissions.

 

this is one of the easiest things to do -- maintenance wise.
up the fill plug first, this ensures that you can get fluid into the housing after removing all the old fluid.

buy the pump, save the mess and hassle, the pump is a god send
If i remember correctly all the boxes use the same weight oil.
fill until the oil runs out the fill hole.

 

I couldn't find it in the regular toyota maintenance site, but I do mine every 30k. I would suggest just making it a part of the large maintenance routines (30/60/90k).

 

Great tip! I just got MT90 from Summit Racing. Whew!

 

depends on dino or synthetic... Amsoil has a service life of 100K for normal use, and 50K for severe use... of course that time shortens if you get it wet/muddy...

amsoil has an online store if you want to go that route, they also have an application guide so you know what and how much to get....

 

Dare I ask where the fill plug is? Lemme guess, under the hood. Im not around my runner for a few days so i cant even look.

 

The fill plug is on the side of the tranny.