Differential covers 101
PU Truck mag That answered a lot of my questions about these covers. Extra large ones may not make a lot of sense because they disturb the oil flow in the housing.
Forum Discussion
SidecarFlip wrote:
Only thing I wish was my stock cover (Corporate 10.25) has a drain plug in it. I have to pull the cover to drain mine, something I do every couple years.
You could remove the gear oil with something like this Topsider Fluid Extractor.
I bought one to use on my boat to change the oil, but it works great for remove diff gear oil as well. In fact, I've found several different uses in the garage so it's a pretty handy tool to keep around.
