my65ss Posted June 13, 2017 Report Share Posted June 13, 2017 I picked up a 75 620 that has been converted to 4x4 by a dealer back in the day out of Oregon. I have figured out from research that the front axle is a Dana 30 with the stock 620 brakes. The transfer case is a Divorced Dana 20. I was in the process of changing all the fluids out to 80w90 Lucas and when I drained the Transfer Case it was ATF. I have done some searches and have found that most use Gear Oil and then some use ATF. Some have even said that an aluminum case uses ATF and that Gears use ATF but a Chain drive uses Gear Oil. I have tried the search function on here and it says that it is not supported, not sure what that means so here I am with this post. So the question is WHAT KIND OF FLUID DOES THE DIVORCED DANA 20 TAKE and how much???? Thanks! Quote Link to comment
]2eDeYe Posted June 13, 2017 Report Share Posted June 13, 2017 Dana 20 uses 80-90w GL4 gear oil. Do you have any pictures of your truck, would love to see it. :D Quote Link to comment
q-tip Posted June 13, 2017 Report Share Posted June 13, 2017 It's a dana20 it's full of gears and should be filled with gear fluid 80/90 to be more specific. Oics!? Quote Link to comment
hobospyder Posted June 13, 2017 Report Share Posted June 13, 2017 I just wanna see the truck Quote Link to comment
my65ss Posted September 27, 2017 Author Report Share Posted September 27, 2017 How do you post pics?? The search function doesn't work either. Quote Link to comment
datzenmike Posted September 27, 2017 Report Share Posted September 27, 2017 You'll need a picture hosting sight that will store your pictures for you. Go there copy image, bring hear and post it. Forget Photobucket and try https://imgur.com/ Quote Link to comment
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