"One last note. If you can get Royal Purple diff oil for less than $6/quart go for it. Otherwise we can make a quick trip to the place near my house to get it (just note that they only keep in stock the 75-90w)."

Huey (tried your PM but it says its full),

You said your local shop only carries 75-90W? Is that ok for the X? I see that recommended is 80W-90 for the diff? Should I stick with that?

Thanks