'93 3.0L Diff fluid?
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Senior User
Joined: Jan 2005
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From: sourthern NJ
'93 3.0L Diff fluid?
I have a '93 4x4 3.0 L Ranger with 184,000 miles. I need to add some Diff. fluid. I've done some research on the site and found that an additive needs to be added if the rear is a limited-slip. Question is how do I know if it's a limited slip? Also, a Haynes repair manual calls for an API GL-5 SAE 90 Hypoid gear fluid. My owners manual does identify a type of fluid. Any suggestions?
Post Fiend
Joined: Jan 2003
Posts: 9,748
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From: Connecticut
Check the transmission code on the driver's door sticker.
https://www.ford-trucks.com/article/...r_Decoder.html
https://www.ford-trucks.com/article/...r_Decoder.html
Post Fiend
Joined: Jan 2003
Posts: 9,748
Likes: 16
From: Connecticut
The 3.73L ratio is a good mix of low-end torque and decent highway mileage. I have the 3.73 on my Ranger (LS) and it suits me well.
You can find 75W-90 or 80W-90 gear oils at most autoparts stores that will work fine for you.
FWIW, I recently changed out the oil in my own Ranger's rear diff and I used Valvoline's "Durablend".
You can find 75W-90 or 80W-90 gear oils at most autoparts stores that will work fine for you.
FWIW, I recently changed out the oil in my own Ranger's rear diff and I used Valvoline's "Durablend".
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