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Rear Axle And Gear Fluid

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The breathers on the axles must have been working properly because the axles somehow avoided water contamination. I simply pulled the front and rear drain plugs and then refilled the axles with 80W-90. I didn't even pull the diff covers, since everything seemed to spin freely and there were no metal bits or other contaminants in the oil. Though I did consider welding the rear differential for spool-like traction, the durability of the stock Dana 41 two-piece axleshafts had me too worried to follow through.