Last spring our dash heater gave very poor heat because the heater hose was kinked.
When we had the kink removed we developed a leak at a splice in the same hose.
We tightened the clamps and didn't think much about it until this spring when the plastic splice started leaking again. As you can see the plastic hose fittings that Newmar provides can't take the heat.
The plastic fitting has now been replaced with a brass fitting and we will replace the entire hose the next time the the coolant is drained. The hose takes coolant from the front of the engine to the back of the engine and is only six feet long with a pointless splice in the middle.
This kinked and spliced hose has caused a lot of greif. Allstar owners would be wise to keep an eye on this plastic fitting. If the hose blew off the plastic fitting on a hot day it would be hard on the engine and hard on the nerves.
We are happy to report that we now have excellent dash heat two leaks and two winters into the life of the coach.