So actually, I do have an update on the ole K10. As many of you have read, I've been chasing an odd issue with my 10.5 14 bolt in the K10 for the past few years where it likes to purge oil after a few hours of driving on the Interstate at 75 to 85 MPH. When driven on state highways at slower speeds or off-road there has been no issues with oil purge…only at high speeds. About a year ago, I ripped it down and inspected and replaced every bearing, race, seal, and verified and driveline angles and back lash. There was no smoking gun, no signs of overheat and only found one bearing (wheel bearing) that had a loose case. Hardly a culprit.
We took off on Desert Trip 2016 and sure enough, a few hours of Interstate driving it started belching oil again. I had a cheap Hazard Freight inferred thermometer with me where the rear diff covers between the K10 and Suburban were within a few degrees of each other (the rear axles in the K10 and Polar Bear Suburban are identical, minus the fact the Burb has an open diff). Again, proving that it is not an overheat issue in the K10. The popular opinion is there is nothing wrong with the axle at all, just a stack up of tolerances between the 4:56 thick gears, Detroit locker, heavy truck, tall tires and high road speed.
The answer would be to slow the hell down on the Interstate, which I am not going to do. I want to be able to keep up with traffic and even pass traffic but without using my James Bond oil hose squirting everybody as I pass them. Being I am sick and tired of the Detroit Locker antics of click bang!, the truck darting one direction under heavy throttle then darting the other direction when letting off I decided it was time for a selectable locker. I also wanted to go to a little wider axle housing to even up the track so I followed Mosesburbs recipe with a 70” wide (hub to hub) G-Van axle to more even up the track to the front Dana 60 at 69” wide. As a comparison to the 67” side C20 axle I've had in it for 20 years.
With that, a fresh rear is in process for the K10….
Hopefully, the butt wiping when the purge bottle over flows will be over now. Talk about a sticky mess all over the back of the camper and trasheroo.