Does Rustoleum carry something that fits that criteria 10Frank9?
Sand off any rust and spray away. If you play on rocks it will just get scratched up again. Rinse and repeat.
Which Rustoleum did you go with for the Differential?
POR15, by far the best
I did it a while ago but here I think this is it. Its rated to 2000 degrees (not sure if I believe that but it's high enough for an axle.
http://paint-and-supplies.hardwares...pla&utm_medium=cpc&utm_term=&utm_campaign=rkg
Hope this helped
Por-15 is an amazing product that I will stand by and use on all of my important vehicles, I painted the whole undercarriage of my 72 f100 it makes it look show quality even when its dirty and will never rust I plan on doing my jk pretty soon here
100% worth the time effort and money