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More confusion. Went and looked in the book to see how much gear oil and it lists two different types for the truck.
75W140 for F250/350 with a 10.5" axle
And
75W90 for F-350 with a Dana 80 gears.
How do you tell the difference since I have a F-350? Only thing on original window sticker related is 3.73 limited slip.
single rear wheel use the Sterling 10.5 inch axle and need the specified synthetic 75w140. Be sure you get the one without friction mondifier so you can add the appropropriate amount. I always add a bit less and see how it goes. The Dana 80 axle is in the dally one ton version.
1. Remove cover, drain oil into suitable receptacle for recycling.
2. Clean out pumpkin and diff cover and bolts
3. Light beeped of RTV or suitable on the cover and let set up, then bolt down with plug out for refilling.
4. Refill axle and appropriate friction modifier, I do 2 ounces first step, run it, see how it works. Then add one more if needed.
5. Clean up shop and perform beverage quality control of your choice.
A little footnote in the owners manual with SRW and DRW would make life easier. Crawled under and checked the tag before I read your reply. Should get it knocked out tomorrow.
Looked like Valvoline came without the friction mod. and the Mobil 1 had it in it for an extra $5 a quart at Advance Auto.
Got started tonight. The RTV ford uses is like super glue. If you have never done it, I took a razor blade around the bottom of the seal. Started on pass side and by the time I got to the driver side it was good and loose with fluid coming out.
Questions and should I be concerned?
1. The refil plug was packed with a thick black goo. Cleaning it out before re-installing.
2. The oil was frothy. Both in the pan and on the gears. See picture below.
I like to clean out the metal sludge out of the lower sump as well so additional wear particles have somewhere to settle. Considering you'll never be able to get all the water out of there, I'd do another change out soon once it gets mixed in with the new lubricant.
I like to clean out the metal sludge out of the lower sump as well so additional wear particles have somewhere to settle. Considering you'll never be able to get all the water out of there, I'd do another change out soon once it gets mixed in with the new lubricant.
Will do on a day that's warmer than 25F. Gear oil is thick and slow at that temp. And my body didn't like it much either. I will pay for this for about a week.
Thanks all for the assistance.
John
Last edited by Jerky's_06 F350; Jan 11, 2016 at 09:11 PM.
Reason: spelling
Before breaking the seal did you drive around to heat up the gear oil? This will help next time. Also I would suggest a gasket scraper for breaking the seal on the cover. If you don't like applying the RTV Lubelocker has gaskets available instead.
Will do on a day that's warmer than 25F. Gear oil is thick and slow at that temp. And my body didn't like it much either. I will pay for this for about a week.
Thanks all for the assistance.
John
LOL--you sound like me John. I hate working out in the cold since it takes SO long to recover. I've got a small oil leak up on the engine I'm waiting for summer to address. Until then, it can leak--haha.
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