Just wondering if anyone else experiences the fan continuing to run after even a short amount of run time. I can run for a bout 5 minutes up here in the great white north and then shut the machine down and leave the key on. The fan will soon kick on and run for a few minutes or until I start the machine back up to circulate the coolant. I was told to add an additive to the coolant that they use in RV's to keep the fluid temps down but I am a bit hesitant. Any thoughts?