Ok, I have a 98 F150 XLT, standard cab, 8 ft. bed, 2WD with limited slip - if any of that makes a difference.

The rear axle vent tube is literally blowing oil out the top, where it's loosely connected to the bed. It does this every few weeks. I pulled the hose and ran a rifle cleaning rod down it to make sure it wasn't plugged ... it wasn't.

It seems like it's building up pressure somewhere, then blowing all at once, but I have no idea why. Any ideas?

Thanks,
dogfood

 

Uhmm, change your fluid, it's spent/over heating/broken down. - If you leave it alone, it will eventually quit doing that on it's own, - right after you blow the rear gear..

 

Thanks, jbrew. I'll go with Option 1 - changing the fluid. Option 2 doesn't sound so good.

dogfood

 

75W140 full synthetic with friction modifier.