I guess that's just the way it is with Pk1's, just doesn't make sense to me. Easy cruising in turf mode with minimal load on the drivetrain should get better results. But slow crawling in 4wd at higher rpm's and more load on the drivetrain is more efficient? Can't change it so I'll just accept it as it is.You will burn more fuel just lolly gagging around than you will on a trail ride. It's all part of learning the machine,try not to analyze too deep.