dtripp09

Hey guys,

Been trying to find some more information on whether or not to do a full flush of the transmission fluid on my 94 pickup 5 speed manual 3.0 v6. General consensus seems drain and fill is the way to go, but what about replacing/cleaning the filter? Somewhat new to doing maintenance on my own, so any and all information on this topic would be appreciated. Thanks.

rattlewagon

No filter in the manual. Empty and replace with fresh gear oil (not atf) . Do your t-case and diffs too while your at it.

One of the most useful things you can do is download the factory service manual. There are links in the stickys for the FSM. It will tell you how to do anything.

Welcome to the forum!

dtripp09

Any recommendations on type or brand for fluid? Just seeing a lot of squabble about it a well. Also, thanks!

Valvoman

Just did this. I used Valvoline full synthetic 75W-90 front to back. No problems.

I used new washers too.

Odin

Do some searches and you'll find that Red Line MT-90 (Synthetic, 75W-90, GL-4) is HIGHLY recommended by Toyota truck owners for most of our transmissions. Transfer cases not so much because of limited use. It has definitely smoothed my shifting when things are still a little cold. Seems to be a little smoother when warmed up too.

When you go to remove the plugs make sure you use a 6 point socket. The plugs can be quite difficult to remove and a 12 point socket can round the plugs because they make less contact than a 6 point. I didn't have much trouble with my drain plug but the fill/sight plug was not user friendly and there are many cases of this. I did manage to get it out though.




After making sure the trans fluid was warmed up I crawled under my 91 2wd while it was sitting on level ground (no jack-stands) and let it drain to a drip occurring every 30 seconds. I then placed a jack under the rear end and jacked it up till more started coming out, it seemed like the higher I jacked the rear up the more fluid came out.
I wondered where the heck all that was hiding because my truck sits level, is stock height, and the tires are all 205/70-14's.

If you're trying your best to get the old nasty stuff out Definitely jack the rear up and let more drain out.

I filled the trans through the shifter location because my floor matting was already out and I don't have a fluid pump.
I had purchased 3 QTS of the Red Line fluid and didn't 100% know how much it was going to take.
I ended up adding 2 1/2 QTS and waiting for some to come out... nothing.
I poured a little more in and waited... nothing.
Finally I poured the last of the bottle in and waited... nothing.

About the time I thought I needed to get more a little started to drip out of the fill/sight plug hole. Not much came out but I waited for it to stop dripping because I didn't want it overfilled.

thefishguy77

iTrader: (1)

Always pull your fill plug first with trans, t case, and diff. The trans you can fill from the top if need be. Not sure on the t case. And the duffs you need to fill trough the plug. The reason is if you drain it and can't free the plug you have to tow it or blow it up driving it. So make sure you can get fluid in before you drain the old.

grumpin

+1 on the Redline MT90. Definitely helped the cold shifting.