Is there a speed limit when using axle interlock?

Nope, just don’t engage when wheel is spinning (stuck).

 

Won't hurt anything if its a little slick out.

In a "perfect world" the interaxle does very little to no speed compensation when running down the highway.

In reality though, tires are never 100% identical diameters, weights aren't always identical on each tire and suspension components have play in them which can alter the axle alignments when driving around corners. Slick roads allow the tires to slip easier, rather than load the gears excessively and make the oil hot.

 

i drove the whole work week with it in one time 65mph

 

Not even a water or “winkle” break? You old camel you!

 

ikr. fyi: careful with them foam pilot cups. gets to heavy and they break off in between your fingers

 

Just gets hard on tires taking turns with everything locked up.

 

Drove mine from omaha to LA to Chicago to omaha once when in the high 400s , 990k on the clock now with no problems .
Switch is hidden behind the qaulcomm.

 

Shouldnt hurt anything as long as its a little slick out. I have driven, amd know guys that still do drive, trucks with full lockers (inter-axle and differential locks). When it gets really ####ty they will lock it all up and hammer down, never seen one with a problem unless they forgot to unlock it once traction got better.

 

Running it locked, is just what we call winter, and spring. Basically November till May, just leave it LOCKED.