Question about 1991 Ford F150

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What kind of oil in 1991 f150 rear differential

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Should be 80/90 gearlube

Posted on Jan 01, 2011

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Posted on Jan 02, 2017

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SOURCE: How do I change the oil in the front and rear differentials F150?

To change gear lube, you will need to remove the cover. While in there, wipe out the bottom of the case with a clean rag to remove any debris in there. Remove any gasket material remaining on the cover and housing and use a good silicone sealer on the new gasket. Re-fill on flat ground and don't put too much in (just to fill hole)

Posted on Mar 25, 2009

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1 Answer

What kind of senor is on a 1991 rear differential ?


1987-2003 Ford F-150 Speed Sensor - Replacement - Mounted On Rear Axlemabpest_8.jpg

Jan 31, 2011 | 1991 Ford F150

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Rear end whine on my 2002 ford f150 fx4 supercrew is it clutch pack?


Could be low on differential fluid, leaking from the wheel seal. The Differential gears could also be worn from low on fluid or ears was not lined up and have worn it self out.

Service the rear end, inspect the fluid's condition and measure the any play in the gears in the rear end replace is worn out.

You may buy some time by running 50% to 100% Lucas oil treatment in your rear differential. Good luck and hope your differential is not to badly worn.

Mar 06, 2010 | 2002 Ford F150 Regular Cab

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What type of oil do i have to use for my FX4 front differential


You can find this info in your owners manual under fluid specifications, or simply call your local ford dealers parts dept. they will tell you the specific fluid to use.

Feb 15, 2010 | 2004 Ford F150

1 Answer

Why is it oil leaking on the passenger side on the floor?


Hi !
You will need to see weather the oil leak is in the front middle or real side.
If from front then it is leaking from engile sump or the oil filter.
If from middle then the gear box is leaking .. will need to change the gasket.

If from rear then the differential is leaking... either it will be from the differential drain nut .... or from th emain differential assey... here again you will need to get a new gasket...

REgards
Berry

Feb 02, 2010 | 1991 Chevrolet S-10

1 Answer

What parts fit from a 1994 to 1991 f150


most parts will interchange,however,the front brakes,the calipers and lockouts will be different.the rotors should be the same,the rear diff-as long as the ratio is the same,trans is different,not sure about the transfercase

Dec 30, 2009 | 1991 Ford F150

1 Answer

1991 F150


either improperly put in or shifted during assembly

Oct 23, 2009 | 1991 Ford F150

2 Answers

Rear axle leaking


Block the front tires. Break the rear lugs loose. Jack up the rear of the truck at the center if possible. remove the wheels & brake drums. Remove the brake shoes,return springs & all the other hardware. Remove the differential cover & drain oil. If you have a posi the next step sucks. You need to remove the threaded pin from the housing & remove the axle retaining clips. All the while,being carefull of the spring in the posi unit. If no posi,then same procedure,minus the "pucker factor". After the axle is out,take a large flat blade screw driver or pry bar & pop the seal out. Keep in mind the axle bearing is probably gone too , so that's another procedure. Keep it apart,you'll be glad you did.

Jun 23, 2009 | 2004 Ford F150

1 Answer

How do I change the oil in the front and rear differentials F150?


To change gear lube, you will need to remove the cover. While in there, wipe out the bottom of the case with a clean rag to remove any debris in there. Remove any gasket material remaining on the cover and housing and use a good silicone sealer on the new gasket. Re-fill on flat ground and don't put too much in (just to fill hole)

Mar 25, 2009 | 1991 Ford F150

1 Answer

Screaching noise on slow lrft and right turns from rear differential


hmm, might be that the gear oil of your rear diff needs to either drained and refilled or just topped off. the gear oil for differentials like those use a special kind of oil which is called hypoid and this is specifically used on limited slip differentials.

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