turn on 4wd high

Thanks everyone. I've only used 4wd in the snow and ice or on gravel when slipping. not sure how I came up with that question, too much time before we leave for our 6 month trip.

HikeN2Mts wrote:
Just a question when I'm towing on mountains roads uphill I slow down of course gas engine, just wondering when I drop to around 40 or less would it help to turn on the 4 wheel drive in high mode to have the front wheels help pull?

What problem are you attempting to solve with pitting it in 4wd?

Look at this and especially the photo:

Link

The answer to your question is no. Read your owners manual's 4 wheel drive section for help understanding. As has been said, 4x4 should only be used on gravel, ice, or snow. Never on dry pavement.

The only time I've ever used 4HI is when it's super icy and I want to roll down a hill at about 2MPH w/o putting the brakes.

I could also see using it in wet grass or loose gravel to try and gain traction - like pulling out a stuck vehicle or trailer. Realistically, there's not a lot of use for it with everyday driving.

I would second everything everyone else said.

Use 4wd on dry pavement if you are trying to convince your wife you need a new truck; cause in short order you will.

No, 4WD is for use on dirt roads and such which allow the tires to slip as needed. Using it on a paved road will ruin your tires.

Check your vehicles manual it will have warnings about this.

I only put my rig in 4 wheel drive if there is a chance that my rear tires my not hold the grip of the road. Never for more power.

NOT on a DRY road!!!
Extremely wet or snow yes, but dry NO!

If you don't like slowing down going up a hill, either get a stronger gas engine, or a diesel!