Changing Differential Fluid - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 07-24-2009
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Changing Differential Fluid

Hey guys, long time no post. I have a fluid question for y'all. I'm almost overdue for a differential fluid change. Thinking about doing it myself this time. My question is... how much fluid should I expect to need? I have a '97 XLT, manual tranny. Of course I'm also new to this sort of work, so I'm open to any suggestions as to what brand I should put in there. I think I have the procedure down-pat... pop open the cover, catch the fluid, magnet out any shavings, reseal and refill from the top. Any help would be much appreciated.
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Old 07-24-2009
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Do you have your owners manual? It should list capacities in the back. I can't remember but the rear I think takes 2-3 quarts. The front only takes about a quart maybe a little more depending on how much you can get out.
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Old 07-24-2009
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Quote:
Originally Posted by FullThrottle02 View Post
Do you have your owners manual? It should list capacities in the back. I can't remember but the rear I think takes 2-3 quarts. The front only takes about a quart maybe a little more depending on how much you can get out.
x2 and use some RTV to seal it back.
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Old 07-24-2009
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if your taking the diff cover off i would go ahead and spray a whole can of brake/parts cleaner on it. if im not mistaken an 8.8 rear end will take approx. 2.75 qts. i would use royal purple also.
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Old 07-25-2009
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Quote:
Do you have your owners manual? It should list capacities in the back.
Wait, my truck has an owners manual? Sorry, you're right... should've checked that first... thanks guys!
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Old 07-25-2009
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I think I used 2.5 bottles of Valvoliene
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Old 07-25-2009
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x2 its about 2.5-2.75 qts any 80w-90 will be fine, if it is lsd and friction additive.
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Old 07-25-2009
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i did my 7.5 recently and it was about 2.5-2.75 ish
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Old 07-25-2009
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I used Mobil 1 Gear oil with the L/S. And like stated above spray the inside part of the lid with brake cleaner, and wipe clean. then use RTV to seal the lid back up.
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Old 07-25-2009
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You may need to pump in new.
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Old 07-25-2009
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a 7.5 should take about 2.75 and an 8.8 about 3.5
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Old 08-05-2009
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Ok, stupid question... would the diff be considered "axle; rear"? Manual says 5.0 pts for that.... I don't see anything else that would be the diff (wouldn't be transfer case, I think).
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Old 08-05-2009
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Yes. Axle is the whole assembly and differential is the center section. People just use diff for the whole thing and pumpkin for the center section.
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Old 08-05-2009
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Alright, cool. I'm going to try doing this sometime later this week. Been crazy busy between work and fixing up the place while the weather cooperates. Thanks for all the help, guys!
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Old 08-05-2009
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Keep in mind they sell this in quarts not pints.

So its 2 pints per quart so you need 2 1/2 quarts aka 3 bottles.
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