Ford F-250 Super Duty Rear Differential Fluid Change
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- เผยแพร่เมื่อ 8 ก.ย. 2024
- In this video we show how to do a rear differential service on a Ford F-250 Super Duty.
If you have any further interest please visit www.2carpros.co... where you can ask any car questions.
*Disclaimer: Please use all safety precautions
I know this is an old video but one note, always remove your fill plug first. You don't want to drain the fluid and not be able to remove that plug to fill it back up.
I have heard that warning my entire life, and no one knows of it ever happening. It's in the old wife's tale category.
Cliff T
Been there done that it happens the one time you tried doesn’t count
This happened to me. Had to weld a bolt onto the fill plug to get it out
Got dayum! Got enough RTV?!
@@clifft7832 wise tale *
Lay the gasket on a piece of newspaper and spray the adhesive on the gasket, not on the differential cover. Also, lose the music. Good tip regarding making sure the plug is removable before starting the job.
gasket optional, using copper rtv sealant and almost fully tightening the bolts you wait a day and come back to tighten them fully but don't over tighten, also sealant goes around the bolts not just the inside as this prevents oil from leaking around a nut over time, never had leak issues doing this
works for most outer parts as long as there's no fuel involved or close moving parts tolerances that need the gasket as a spacer like on engine cases for motorcycles
my manual calls Motorcraft SAE 75w 140 synthetic and 8oz of additive
If the diff is "limited slip" or "posi-trac" then yes, put in the additive. If a regular diff, no need. My F350 is a regular diff while my F150 is LS
Don't forget to add the limited slip additive FIRST, before filling!
As long as you put it in the first quart you are good. If you have a LSD if not you don't need it. Thanks for watching!
If you HAVE an LSD you DO need it. Hence, LSD additive. The clutch packs need it.
my only suggestion, any time using a product like rtv or silicone gasket maker you should give the silicone adhesive adequate amount of time to dry. You don't want to allow the fluid to come into contact with the rtv, the different chemical properties will not allow the rtv to adhere to it's proper effectiveness. Other than that great video.
Thank you for your comment. I agree to let the silicone to dry but in all honesty you could put the gasket on there with no silicone and it would be fine. Also doing a thin bead of silicone rubber allows it to dry faster enough for after finishing the repair to fill the rear end with fluid. Our car in video is a family vehicle with over 25k miles after the repair with no problems. We use the silicone rubber just for an added security. Thank you for watching and please subscribe!
+2CarPros 25k miles is decent, but how bout a follow up? Many tips work fine for some time, but dont compete with the best solution for many more miles. This is especially because you didn't say what silicone you used, nor what gasket you used exactly. Also, what if you only use RTV with no gasket? I have used RTV this way with good results, but again, like you, wasn't long term; it was 15k miles.
Thank you for the video! I am doing this job now waiting for my gear oil to drain. I've researched a lot of threads and videos saying not to use rtv sealant with the fel-pro gasket, just to use one or the other. I'm wondering why you opted not to use the rtv on both sides of the gasket as the oil will reach the adhesive side also. Not judging just torn on if I want to use just rtv or just a fel pro gasket as I purchased both.
Check this video out. th-cam.com/video/cx9rfHvGe8U/w-d-xo.html Basically I don't want it to leak. Thanks for watching!
@@2carpros I watched that one also. I ended up doing it that way with the rtv but with just a thin finger coat of the rtv Gear rtv 81182 on both sides of gasket. I just couldn't see why not add a little more protection. Thanks for the help, have a good one! 👍
Yeah, I'm new to the 6.0 but never heard of adding RTV to a gasket. Now I'm over here doubting myself. I didn't use RTV or spray on mine and it's holding up fine. I think the whole point of using a gasket is to not have a mess to clean up the next time around. Seems like it defeats the purpose but I guess time will tell.
What kinda of spray adhesive and caulking did you use? And was that necessary? I'm changing my rear pinion seal this weekend along with the differential fluid I'm going to follow these steps for the fluid change and just wanted to make sure I was doing everything correctly.
@wnc817 I wear a disposable glove, and coat both sides of the gasket. Ultra Black or Grey is a good product.
Don't use that much silicone. It will end up inside.
also what did you paint the dif plate with?
I forgot to get the adhesive spray is it ok to use the sealant from a tube that I'll use for beading the casing
Woah dude, how much torque did you use on those bolts.. Looks like a lot.
Just snug is good. Thanks for watching!
@@2carpros looks like 60 lb. not very pro.. no torque, clean diff with oily rag. should wait 15 mins before the 60 lb bolt tightening , contact spray on cover. should spray gasket. leave top bolt in..
i dont even use a gasket, just the rtv is enough, self wrenching on all my vehicles for last 20 years..........good vid though
LawDawg379 good tip. 👍🏻👍🏻Yeah I've been wondering if I could do that, even though my vehicle calls for a gasket. I've been using both RTV & Gasket. Think I'll try just RTV next time.
how about torque to spec?
35 lbs ft
Wow gasket and silicon gasket!
+robert wheeler you've got that right!!
Save some RTV for us, KYLE
Never! It's all mine! Muahahhaha!
According to the service manual you are supposed to stop filling the diff once the oil reaches within 1/4" - 9/16" from the bottom of the fill hole. You definitely overfilled this differential.
A quarter inch? Can't see it mattering that much. Thanks for watching!
do you have to use the silicon or can you just use a new gasket?
You need the silicone. Thank you so much for watching!
@@2carpros I've been using either or for many years, but i never used both. I have never had a problem. I will try your method next time.
No, 1 or the other... you don't need both. If the 2 surfaces are clean and oil free the gasket will work just fine. You don't need the glue either... never heard of that nonsense.
What's the point of using a gasket and silicone??? That defeats the whole purpose
Check this video out, th-cam.com/video/cx9rfHvGe8U/w-d-xo.html Thanks for watching!
So does this year model not take the 'friction modifier? What years do and don't
It is a matter of whether or not you have a limited slip differential or not. Thanks for watching!
@@2carpros so the answer to my question is that the year model your working on is not L.S.? And to my other question, no advise or how to tell if L.S. or not.
I don't think it was, it was a long time ago. You can find that info out via your differential tag or Vin number. Thanks for watching!
It looked like you torqued those bolt to about 100 ft/lbs, is that right?
Definitely not. The service manual for a Super Duty states around 30-40 ft/lb.
RTV on a fel-pro gasket? What?
Only if you don't want it to leak. Thanks for watching!
Next video I'd recommend not using the 70's Mario cart p*rn music
Nice video though, informative
It was the only free use music back then.
Thanks for watching!
"70's Mario cart p*rn music" 🤣 lmao
whats about the LSD additive?
Fenton Grant it was an open diff
What fluid is recommended for the rear diff
75w140 At least that’s what I’ve been told. And I trust them. So going for it. Lol
Check the door sticker, it will tell you what kind of diff you have. Once you know what it is then just google it. There are multiple types that ran in these. Mine was also 75w-140 with a limited slip additive.
naah I think you should just buy 2 1/2 quarts of oil to refill instead of 3. We don't want to be wasteful, now do we?
I'm sure the parts store will help you out.
Goop her up good it might leak!