Has anyone experienced oil loss after switching to the Amsoil synthetic? I appear to be using oil since changing over. I switched over at 3800 miles, second oil change, and since filling it and putting another 1,000 miles on it I have had to add another quart and I am still in the middle of the dipstick with the oil. I have checked for leaks and there appears to be no oil on the motor or filter and there has not been any oil on the ground. I did a really good job of draining the old oil but even new the motor is supposed to only take 5.3 quarts and I have put in almost 6 quarts. Any thoughts are appreciated.