Pulled out of camp today with my fith wheel. There was some pretty muddy places so I put it in four high. Forgot to take it out when I got onto the highway. Drove home 100 miles before I realized the problem. I thought my trailor brakes where sticking a little. Thats why it felt a little sluggish. So did I do anything to hurt the truck. Just had the fluieds changed on the transfer case on front diff about a month ago. Should I do it again? Or is it fine. Thanks

Your fine, just burned more fuel then you needed to.

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x4

ya Ive done it for about 60 miles....was wondering why i was burning so much fuel....pulled in to get some fuel and it was steering funny and i realized it was still in 4hi

Cool thanks fellas

x6. I drove about 80 miles with mine 3 years ago and was doing about 70+ the whole way home.

I make a point of driving 20 or 30 mile every now and then in 4H, only on a straight motorway though, as i think it's best to get all the fluids and gears moving a bit that would otherwise be seldom used. hasn't caused me any trouble yet.

yep, your good. just uses more fuel, did that with my dads pickup along time ago, never seemed to bother it or affect.

Running 4 hi in a straight line is no problem. I do it every now and again just to keep everything lubricated. It when you start turning and binding the driveline while on pavement then problems happen.

Yes, I've noticed that with my M1008. It's almost as if it has a locking front axle, which i gather they haven't got, which is why it surprises me that it does that tyre scuffing/snatching thing when cornering. Like i said, that's why i only do this on straight motorways, pulling into lay-bys only to engage/disengage the hubs.

Only exception I would see to all of the above would be if your front and rear tires are not exactly the same size.

The reason you have trouble steering in 4wd is because the front wheels have to travel further around a corner, as they go around a bigger radius circle than the rears, so something has to slip, hop, or break. This puts a lot of strain on the front wheel bearings, which are maybe one of this trucks weakest links.

If you had different circumference tires front and rear due to inflation pressure, wear, or mismatched tires, you would have a similar problem in a straight line as well, where some slippage has to occur.