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I went to Harbor Freight and picked up a fluid pump for about $10 that screwed onto quart and gallon cap threads. The only issue with the Harbor Freight one is that it only pumps 1oz per pump. You will get a forearm workout but it beats paying the stealership.
If you drill a small hole in the oil bottle near the top...you put your air hose (with VERY low pressure) in this hole, next drill a hole in the cap for a fill tube to fit snug, screw the cap on tight, as you apply air pressure to the oil bottle it will force the oil out and into the axle. I'll see if I can find a video on this, we do it all the time on the helicopters.
My diff cover gasket showed up a few minutes ago, was in a big box from amazon along with another item.
I almost choked when I opened the box and found the gasket packaging FOLDED OVER!!!
Pulled it out of the box and turned the package over and saw that they had folded the packaging but luckily the gasket was not in the folded part.
I had actually worried that they might fold it over and bend the gasket, amazon can be gorilla like in their handling.
I used to do the diff fluid on my old RAM pretty often, and the RAM diff cover had a great reusable metal/rubber gasket and I never had to replace it.
Does Ford use gaskets like that or just RTV???
Knowing Ford it is probably RTV...
Ford is using reuseable gaskets on the 11.6 Sterling for the '23+ trucks.
I used a Lube Locker on my 10.5 and was impressed with its quality.
The quotes from dealers for those services are INSANE. It's a very easy job to do, especially the transfer case which is two plugs, drain, and fill. Can't remember if the diffs have drain plugs on these or not but I like to pull the inspection cover anyhow and wipe the magnets clean. I did all of mine laying on my back in a gravel driveway and spent very little on fluids and one tube of gasket maker to seal the inspection covers back up. NO WAY I'd pay those ridiculous dealer prices for simple jobs.
Yea, seemed awful expensive to me too. Axles and transfer case are pretty easy, drain and refill. Some good fluids and a decent drain bucket, it's a pretty easy DIY job. Trans is a little more difficult, I'd be more willing to pay for that service.
On the 6r140, take a Mityvac and suck the pan dry from the dipstick tube. The drop the pan and filter with no drama and cleanly. You can do it all ....everything. budget a Saturday.
id go Redline or Shaeffers bumper to bumper. If you want to do it cheaper Walmart SuperTech. Use Mercon LV in the Tcase and trans. 75w140 in the rear (4qts) and 75w90 (3 will be more than enough)
I changed out the rear diff fluid in my 450 a couple of months ago with AmsOil severe gear 75/140. I was wondering about using additional friction modifier with the fluid change, so I called AmsOil tech support and asked them if the additional friction modifier was needed. Tech support said not needed, as the Severe Gear has plenty of it in the oil already. No chattering or noises from the rear diff since adding the AmsOil.
Have you noticed any MPG difference at all going with AmsOil? I remember a few years back some claims of switching to AmsOil rear diff fluid increasing fuel economy and never knew what to believe.
It is. Remove the fill plug, then remove the bolt on the bottom of the diff cover that is marked drain and drain the diff. Let it drain a while, reinstall the drain bolt and refill it. The Dana M300 takes around 4.3 to 4.5 quarts to refill. Depending on which fluid you use you, you will not need to add friction modifier (Amsoil doesn't require friction modifier, can't say for others).
The M300 takes 3.78qts and Ford literature specifically says that includes the limited slip additive. So they only want that much in there.
No clue why they put the fill plug high. Maybe to make sure the fluid is specifically measured?..
Have you noticed any MPG difference at all going with AmsOil? I remember a few years back some claims of switching to AmsOil rear diff fluid increasing fuel economy and never knew what to believe.
The M300 takes 3.78qts and Ford literature specifically says that includes the limited slip additive. So they only want that much in there.
No clue why they put the fill plug high. Maybe to make sure the fluid is specifically measured?..
I got just under 4 quarts of Schaeffers 75w140 in before it just started seeping out the fill hole. I've measured the diff cover with an infared thermometer while towing 17k lbs in 100+ degree heat running 70mph and it was 170F the hottest I've ever measured it.
Ford's recommendations are only worth so much. They used to recommend 75w90 in the M300 and then they had people overheating them so they changed to 75w190 and added finned aluminum diff covers on the diesels. They also recommend 150k mile service interval for the rear diff fluid.
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sorry
