I just got off the phone with Exmark, I told him I was questioning how well the hydraulics were being cooled when dropping 400 rpm's and the mower is cutting in 100°+ weather. He told me he would get me their test information of temperatures and failure points and email it to me. He guaranteed me there was no mower manufacturer in the country with the sophisticated test facilities Exmark has, and he had been in the business a very long time. He also told me they were seeing what one would consider excessive oil usage during the break-in period, moreso with the 38 than the 34. He said a person may see in excess of 2 oz. per hr., and it scared people to death, but after 50 hrs. (but sometimes longer) the oil consumption fell off considerably, sometimes to almost no usage. Exmark is getting tremendous feedback from the end users on the New Red technology, with most saying they cannot believe the power and the unbelievable fuel economy.