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94 mazda b4000 diff fluid #5116864
05/26/19 11:08 PM
05/26/19 11:08 PM
Joined: Apr 2019
Posts: 44
67218
HyundaiAbuser Offline OP
HyundaiAbuser  Offline OP

Joined: Apr 2019
Posts: 44
67218
Hey guys I'm looking to change the differential fluid in my 94 b4000 but I cannot find the owners manual. If y 'all have any suggestions as to what is oem or what can work that would be fantastic.

Re: 94 mazda b4000 diff fluid [Re: HyundaiAbuser] #5116872
05/26/19 11:35 PM
05/26/19 11:35 PM
Joined: Nov 2004
Posts: 1,220
Metro Detroit
cos Online content
cos  Online Content

Joined: Nov 2004
Posts: 1,220
Metro Detroit
From the Amsoil Lookup Guide: "GL-5 All TEMPS....80W-90"


'15 Cadillac SRX
- Castrol Magnatec 5W30





Re: 94 mazda b4000 diff fluid [Re: HyundaiAbuser] #5116888
05/27/19 12:07 AM
05/27/19 12:07 AM
Joined: Jun 2003
Posts: 19,190
Apple Valley, California
Chris142 Offline
Chris142  Offline

Joined: Jun 2003
Posts: 19,190
Apple Valley, California
Isn't that just basically a ford ranger?


02 Wrangler traveler sae30
87 F250 Valvoline 15w40
07 fjcruiser Chevron 10w30
Z400 castrol T 10w40
Can am maveric edge 5w40
57 case tractor Chevron sae30
Re: 94 mazda b4000 diff fluid [Re: HyundaiAbuser] #5116897
05/27/19 12:27 AM
05/27/19 12:27 AM
Joined: Jun 2012
Posts: 2,072
High Tax Illinois
oldhp Offline
oldhp  Offline

Joined: Jun 2012
Posts: 2,072
High Tax Illinois
Any 75W90 syn will work fine too.


2018 RAM 1500 3.6/8 speed.
2019 Dodge Charger SXT 3.6/8 speed.
"When others cut you down, remember where they came from."
"I don't run...........I just wait."
Re: 94 mazda b4000 diff fluid [Re: HyundaiAbuser] #5116993
05/27/19 07:23 AM
05/27/19 07:23 AM
Joined: Apr 2010
Posts: 1,726
Suburban Washington DC
atikovi Offline
atikovi  Offline

Joined: Apr 2010
Posts: 1,726
Suburban Washington DC
[Linked Image]

and RTV for the cover

[Linked Image]

Re: 94 mazda b4000 diff fluid [Re: HyundaiAbuser] #5117137
05/27/19 10:04 AM
05/27/19 10:04 AM
Joined: Apr 2019
Posts: 44
67218
HyundaiAbuser Offline OP
HyundaiAbuser  Offline OP

Joined: Apr 2019
Posts: 44
67218
thanks guys im planning on doing it when my rtv comes in tomorrow

Re: 94 mazda b4000 diff fluid [Re: HyundaiAbuser] #5118228
05/28/19 02:07 PM
05/28/19 02:07 PM
Joined: Apr 2006
Posts: 9,499
Birmingham, AL
01rangerxl Online content
01rangerxl  Online Content

Joined: Apr 2006
Posts: 9,499
Birmingham, AL
80W90, but really anything that is GL5 gear oil is fine.

I have Sta-Lube 80W90 in the front and rear diffs on my '94 Ranger because it came in a convenient gallon jug. My '02 has synthetic Valvoline 75W90 in it. Ford specified 75W140 for many 8.8s, and I have used that too. I'm going to change the front & rear diff fluid in my '94 Explorer soon and will use whatever 80W90 I find in a gallon container...Coastal, Sta-Lube, etc.

If the truck has a limited slip diff, you need to make sure to use friction modified fluid or buy an additive. You can find out if it is limited slip from the axle code on the door jamb.


2002 Ford Ranger XLT | 3.0 V6 Auto 2WD | 231K miles
1994 Ford Ranger STX | 4.0 V6 Manual 4X4 | 201K miles
1994 Ford Explorer XLT | 4.0 V6 Auto 4X4 | 250K miles
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