Bobrady...

I had not heard of that problem. By your mileage, I am guessing you are in a warmer climate or it has been around 50 degrees or above. My NAH is just shy of a month old. Also works well but I do see the affect of winter on the MPG. I guess I shouldn't complain to much as the current mpg is 33.3 with below freezing temps. I do baby it.