I do alot of motorway miles and was wondering if I fit a switch to turn off the 4x4 while on the motorway, will it prolong the life of my transferbox?
Changing the oil and watching the tyre depths prolongs the life of the transfer box.
The t/x box doesnt wear when its working properly.
Saying that, some ppl fit it to help with fuel economy a little bit on the M-Way. Have a look at the CavWeb How2's as Andy has written a guide on it - www.cavweb-forums.co.uk
Have a look at the 'Workshop Manual' Do's & Dont's