My pickup (Ram 2500) gets about 1200Mpg of DEF. When I am towing our large RV trailer, it drops to 800Mpg. I drove the RV from WI to OR on about $10 of DEF.

My pickup (Ram 2500) gets about 1200Mpg of DEF. When I am towing our large RV trailer, it drops to 800Mpg. I drove the RV from WI to OR on about $10 of DEF. I don't understand why some people think it's a big deal.....