Fryeken Posted October 20, 2021 Share Posted October 20, 2021 Morning gentlemen, I’m wanted to ask if motorcraft hypoid is the only gear oil of choice for the Dana 50 and 10.25 rear? I have no reason to believe mine is not on the original fill and after all these years think it should be freshened up. I found it at rockauto for $25/ quart, but I’m curious why a standard 75/90 with friction modifier won’t work the same. Link to comment Share on other sites More sharing options...
Gary Lewis Posted October 20, 2021 Share Posted October 20, 2021 A name-brand 75/90 or 80/90 will be fine, unless you have the limited-slip diff and then the friction modifier is needed. I run Mobil 1 synthetic, but that is probably overkill. Link to comment Share on other sites More sharing options...
Fryeken Posted October 20, 2021 Author Share Posted October 20, 2021 A name-brand 75/90 or 80/90 will be fine, unless you have the limited-slip diff and then the friction modifier is needed. I run Mobil 1 synthetic, but that is probably overkill. Thanks Gary, I miss the smell of friction modifier. Link to comment Share on other sites More sharing options...
Gary Lewis Posted October 20, 2021 Share Posted October 20, 2021 Thanks Gary, I miss the smell of friction modifier. That stuff STINKS! Do you have a pet skunk? Link to comment Share on other sites More sharing options...
Atlas75 Posted October 21, 2021 Share Posted October 21, 2021 That stuff STINKS! Do you have a pet skunk? Perfect timing on this question. I need to change my rear axel fluid as well. I have been looking at this product at Walmart. Seems like it will do the trick. Any issues with using this in a Dana 61? Link to comment Share on other sites More sharing options...
Gary Lewis Posted October 21, 2021 Share Posted October 21, 2021 Perfect timing on this question. I need to change my rear axel fluid as well. I have been looking at this product at Walmart. Seems like it will do the trick. Any issues with using this in a Dana 61? I don't see any problem with it. And that style of container is great. Link to comment Share on other sites More sharing options...
kramttocs Posted October 21, 2021 Share Posted October 21, 2021 I don't see any problem with it. And that style of container is great. Agreed I put the Amsoil in my 10.25 using those bags and it really made it clean and easy. Link to comment Share on other sites More sharing options...
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