I pull 7hrs tomorrow to VIR. I noticed that the Ram’s diff has been weeping a little fluid out of it’s drain plug for a couple weeks now, so I figured I’d check it out before the trip. I had the rear end replaced last Summer.
My first problem was that I couldn’t get the rubber plug pulled out. I figured that it formed some kind of dust cover for the drain bolt that would be behind it. If I pulled any harder on it, I’d tear it. So I got on a Dodge Forum and asked about it. That’s when it got better.
To my surprise the guys on the Dodge forum said that the rubber plug was the plug. There was no bolt underneath it. So the only thing holding my diff fluid in was drain plug on the order of a bathtup rubber stopper.
WTF, over? The rubber stopper is in the same location as the E30 diff drain plug. It’s splashed with fluid constantly. As it gets old the rubber gets hard and it doesn’t seal well. So the diff fluid starts weeping. Who the hell would design a major drive train component such that it’s lubrication load was held in by only by a bathtub stopper? I mean for god’s sake, was it just to expensive to design it for a big reliable threaded bolt?
Ultimately, I couldn’t find a replacement rubber stopper. Everyone in town needed a couple days to get one. So I put some RTV on it and popped it back in. POS.