tranny fluid
Fleet Mechanic
Joined: Dec 2003
Posts: 1,436
Likes: 117
From: Virginia
You can't answer this as a "yes or no" question, but more of a "it depends".
"Most" of the Ford & Mazda 5sp 4x2 trucks take ATF. You have to check your owner's manual, or verify which type of trans you have.
On the other hand "most" of the trucks that took gear oil in the trans were 4x4 trucks equipped with a Mitsubishi made trans.
"Most" of the Ford & Mazda 5sp 4x2 trucks take ATF. You have to check your owner's manual, or verify which type of trans you have.
On the other hand "most" of the trucks that took gear oil in the trans were 4x4 trucks equipped with a Mitsubishi made trans.
Fleet Mechanic
Joined: Aug 2002
Posts: 1,344
Likes: 12
From: Sioux Falls SD
What year and what trans.?
My 99 calls for atf. I personally use Royal Purple Syncromax. It has the viscosity of atf but additives made for gears and syncronizers in a manual trans. Much more robust and worth the $ in my opinion. I tow alot and the Syncromax seems to hold up better and keep the trans cooler, it is a synthetic formulation.
Just my $.02
My 99 calls for atf. I personally use Royal Purple Syncromax. It has the viscosity of atf but additives made for gears and syncronizers in a manual trans. Much more robust and worth the $ in my opinion. I tow alot and the Syncromax seems to hold up better and keep the trans cooler, it is a synthetic formulation.
Just my $.02
Moderator
Joined: Jan 2004
Posts: 13,851
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From: SW Va
Bet you'll notice a nice improvement in shift quality, maybe even a mile or so improvement in mpg!!!!
Posting Guru
Joined: Feb 2006
Posts: 1,448
Likes: 1
Heavy gear oil will make it hell to shift in cold weather when first starting the engine.
This is one application where I do not use anything but Ford ATF in the trans.
I was using Mobil 1 ATF, and my shifts seemed to be a little "draggy" for want of a better term. The low to second to third shifts seemed to not be smooth, and took a little more effort when the syncros engaged. I read an article somewhere that explained that Ford used a special formulation to allow the transitions from gear to gear to be smoother in the manual trans due to the design of the syncros. I am a hard head, and didn't believe it. But, I tried it anyway, what's a couple quarts of ATF. The article was right. After changing the oil, the trans shifted as it should.
jd
This is one application where I do not use anything but Ford ATF in the trans.
I was using Mobil 1 ATF, and my shifts seemed to be a little "draggy" for want of a better term. The low to second to third shifts seemed to not be smooth, and took a little more effort when the syncros engaged. I read an article somewhere that explained that Ford used a special formulation to allow the transitions from gear to gear to be smoother in the manual trans due to the design of the syncros. I am a hard head, and didn't believe it. But, I tried it anyway, what's a couple quarts of ATF. The article was right. After changing the oil, the trans shifted as it should.
jd
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