Using the Aqua-hot to heat the engine seems to be slow lately and left on a long time the engine
doesn't seem to be as hot as it should be. As the Aqua-hot is out of the coach, it is the perfect time
to check it out. So I will check the impeller on the engine heat pump. Its been working great but it's
over 4 years since I've done a tune up on it.
Never seen a write up on the engine loop ... interested in what you find