Yes it's getting hot, to the point where it get's hard to turn over, when this happened I let it sit before I drove it home...(about 2 miles) then it was getting hot again just not as bad! The heater has sucked for a while and the lines are ran correct as well as insulated,( for the winter since there braided stainless and they loose alot of heat)Radiator is blocked with cardboard and is only a 3 core I believe, maybe 2.............What to do, it also has the higher output motor, or fan on the motor any suggestions?and removing the cardboard didn't help, THX Mike