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94 Ford Ranger Trans oil #4657837
02/06/18 10:34 AM
02/06/18 10:34 AM
Joined: Oct 2008
Posts: 29
Washington, USA
usdart Offline OP
usdart  Offline OP
Joined: Oct 2008
Posts: 29
Washington, USA
What is the best Manual Trans ATF oil for a 94 5spd trans. Merc, royal purple. Pennzoil, amsoil? Leaning toward Royal Purple syncro

Re: 94 Ford Ranger Trans oil [Re: usdart] #4657935
02/06/18 11:57 AM
02/06/18 11:57 AM
Joined: Jun 2004
Posts: 2,684
South Carolina
bmwtechguy Offline
bmwtechguy  Offline
Joined: Jun 2004
Posts: 2,684
South Carolina
How many miles on that ole truck? I replace the recommended ATF with a synchromesh type fluid, esp with higher miles and here in warmer climate. I have used mostly Amsoil MTF with good results.

Re: 94 Ford Ranger Trans oil [Re: bmwtechguy] #4657941
02/06/18 12:02 PM
02/06/18 12:02 PM
Joined: Oct 2008
Posts: 29
Washington, USA
usdart Offline OP
usdart  Offline OP
Joined: Oct 2008
Posts: 29
Washington, USA
118,000 low miles for 94. Shifting is hard and when it is very cold it is extremely hard to go to 1st, or 2nd.

Re: 94 Ford Ranger Trans oil [Re: usdart] #4657950
02/06/18 12:12 PM
02/06/18 12:12 PM
Joined: Oct 2008
Posts: 29
Washington, USA
usdart Offline OP
usdart  Offline OP
Joined: Oct 2008
Posts: 29
Washington, USA
Changed to Royal Purple. Best thing I ever did to it! Shifts smoooooth as butta now. Should even see an increase in mileage too.

Re: 94 Ford Ranger Trans oil [Re: usdart] #4657978
02/06/18 12:39 PM
02/06/18 12:39 PM
Joined: Jun 2004
Posts: 2,684
South Carolina
bmwtechguy Offline
bmwtechguy  Offline
Joined: Jun 2004
Posts: 2,684
South Carolina
It sounds like there may be a problem to fully releasing the clutch if you are having a problem getting into first or second. First I would check the clutch fluid reservoir (takes brake fluid). You may have an issue with the clutch master or slave cylinder or just air in the clutch hydraulics, which makes it much harder to fully release the clutch to disengage from the flywheel.

If that's not the issue, then someone may have put too heavy a fluid in there that is making it hard to shift when cold. But when you are sitting still at a light, even in cold weather, you should be able to push in the clutch and within a second, just slide easily into first gear. If it tries to grind in this condition, you have a clutch release issue that needs addressed, not something that a different fluid will fix.

Re: 94 Ford Ranger Trans oil [Re: usdart] #4658005
02/06/18 01:13 PM
02/06/18 01:13 PM
Joined: Sep 2015
Posts: 6,075
Kalifornia Kollective
BrocLuno Offline
BrocLuno  Offline
Joined: Sep 2015
Posts: 6,075
Kalifornia Kollective
OK, that's prolly a Mazda built tranny. They have oiling issues. The fill hole is 1/2" to low to really adequately lube the cluster. If you can, screw in a 45* stainless "street" elbow (pipe fitting) and add a cap/plug to that. Face the elbow up and you will get the additional fluid needed.

If you do not have room to do that, the best way is to overfill from the shifter.

Redline MTF is prolly the best fluid you can get for that tranny. Very smooth and absolutely the best lubricant for that slightly over-stressed tranny smile

Last edited by BrocLuno; 02/06/18 01:14 PM.

Formerly in marine engineering. In an earlier life I owned my own petroleum tank truck, and hauled for the majors and independent's.
Re: 94 Ford Ranger Trans oil [Re: usdart] #4658018
02/06/18 01:25 PM
02/06/18 01:25 PM
Joined: Jan 2008
Posts: 521
Richmond, BC, Canada
mechjames Offline
mechjames  Offline
Joined: Jan 2008
Posts: 521
Richmond, BC, Canada
The Mazda M5OD takes ATF.


86 Mustang 5.0L 170km - Amsoil XL 5w30 / Baldwin B2-HPG
14 Ram 1500 5.7 - Amsoil XL 5w20 / Baldwin B7443
98 Jeep ZJ 5.9 - Amsoil OE 10w30 / Baldwin B34
Re: 94 Ford Ranger Trans oil [Re: usdart] #4658134
02/06/18 03:25 PM
02/06/18 03:25 PM
Joined: Nov 2006
Posts: 1,016
Long Island, NY
Drew2000 Offline
Drew2000  Offline
Joined: Nov 2006
Posts: 1,016
Long Island, NY
I had a '91 Explorer with the Mazda 5sp manual. Mobil 1 ATF worked great in this box.


17Escape 2.0
11Mustang GT
06Tribute
05Honda ST1300
03Yamaha FZ1
93Regal
91Explorer
87F250
85FJ1100
83CB650

Re: 94 Ford Ranger Trans oil [Re: usdart] #4658199
02/06/18 04:22 PM
02/06/18 04:22 PM
Joined: Jul 2004
Posts: 12,070
Middlesex County CT
simple_gifts Offline
simple_gifts  Offline
Joined: Jul 2004
Posts: 12,070
Middlesex County CT
I use RP in mine; I have about 50K on it.

It was never a fast shifting transmission. Give it some time between the gear changes and put in a new(er) oil and all will be fine.


2004 Prius; 102K; ASL
2007 Yaris 78K 0w-40 Castrol
2006 B2300;132K;ALM


Was driving an ox cart; Now on the USS Enterprise

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