Differential fluid change fill up

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May 22, 2011 | 04:13 PM

chi6488

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Differential fluid change fill up

I am wanting to change the differential fluid due to the towing I do with a 11k lbs boat and 10k lbs travel trailer.

I noticed that the fill plug is half way up the plate towards the front of truck. The trans axle plate has bolts in the rear so I will have to pry the cover loose once loosening the bolts.

How do I fill the fluid full if the fill plug is only HALF way up the plate??

Maybe instructions how to do this procedure. I am sure dealer wants 2-300 bucks for the job.

THanks

May 22, 2011 | 08:18 PM

galaxie641

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From: SE Wyoming

You don't fill the diff clear full, it won't even fill all the way to the fill plug. The owners manual has the capacity listed under capacities and specifications.

May 22, 2011 | 08:19 PM

senix

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From: Frederick, MD

No trans axle on this truck. Terminology is rear differential.

You take the cover off of the rear diff to do the job. To refill you use that hole for the plug. Just fill it according to the owners manual...or to the treads.

consult the manual for the type of fluid.

Also the cover does not have a gasket. So some silicon to get the seal is in order.

May 23, 2011 | 01:59 AM

ford390gashog

Fleet Owner

Joined: Jan 2004

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From: Brentwood,CA

Honestly local ford dealer charges me about 65.00 a diff to do it. The price is decent so maybe look into it.

May 23, 2011 | 03:31 AM

zxwut?

Fleet Mechanic

Joined: Jan 2009

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From: Fort Worth

Just use a hand pump that you can buy at any hardware or auto parts store, and fill it to the hole.

May 23, 2011 | 06:48 AM

chi6488

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I'll check into the price. I haven't yet ruled it out but had not had a chance to call dealer. I still need to do the pcm recall anyways

May 24, 2011 | 09:28 AM

chi6488

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Just checked with my local ford dealer where I bought the truck. Don't know is service adviser was wrong but she quoted $250 b/c it too synthetic fluid..

Think I will do it myself