I drove from Houston to Oregon 2200 miles with a Uhaul trailer. Loaded up I was at about 2000-2500# I was overheating in New Mexico with steep grades and heat of 100°. I had to baby it and go really slow about 50-55 mph to keep the radiator temps before 230. If I would try and go 65 it would...
Fuel mileage has always been hard to gauge with the way I drive, but I was getting 20-21 highway with the 37s. With the 40s I'm currently getting 18.5 highway. I'm also running the rcvs in the front with fad delete. So I'm sure that's draining some mpg.
I re geared to 4:56 going from 37s to 40s. I drove the jeep about a week on 37s and the 4:56 combo. Imo 4:56 is perfect for the 37s. The jeep felt stock with that gear ratio. Acceleration from a dead stop to highway speeds was great. Makes me wish I would have gone 4:88 for the 40s.
I did have the AC on but I always do and this is the first time it's ever done it.
My AC blows super cold, but when I changed to a bestop sunrider I can tell it gets way hotter inside now. I need to turn it up higher than normal.
I remember reading someone saying that their fans were really loud to where they could hear them. Today I had it happen to me, I could hear a loud humming and it turned out to be the fans being on full blast. Engine temperature was normal I'm not sure what's going on. No service engine light.
Just re geared to 4:56 waiting on 40s. Been driving it around with the 37s and currently getting 18 mpg avg. 90% highway driving.
It drives awesome with this gear ratio and 37s. Starting to think I should of went 4:88s for the 40s. But I wanted it to stay as strong as possible.