Anti-Spin Axle & Fuel Economy

[TheKid7]

I am just curious. Is there any measurable difference in Fuel Economy between having an Anti-Spin Axle versus a Regular Axle?

Also, if you never tow anything (Just drive the Truck as a Car), how often should the Axle Fluid be changed for an Anti-Spin Axle?

Thanks in Advance.

 

[ramdriver2018]

No mpg difference unless you count testing to see if the lsd works.
You will change the oil every time you break the lsd or strip a few teeth off the ring gear. That will always keep fresh oil in the diff.
Keep large tube of silicone handy in caulking gun. You will be glad to have it every oil change.

 

[BWL]

I change mine roughly every 40,000 miles or if it starts looking dirty.Wouldn't expect a noticeable economy difference.

 

[Firebird]

No difference

 

[huntergreen]

Kid, with the way you use your truck, you can the maintenance schedule in your owners manual as far as did fluid goes. LSD shouldn't affect your mpg.