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hydro hot solution

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george starkweather:
Roger ,I just had my Hydro Hot serviced at Benson, AZ by RVMD out of Tucson.  The mixture is 50 % solution to 50 % water.  The jet nozzle should bereplaced every year.

Hope this helps.  

George Starkweather

Joel Ashley:
Roger-

Get Camco -100 Boiler Antifreeze (not just any old antifreeze!!).  I often find it at True Value hardware stores and not at Camping World (go figure), and it has always been cheaper there than at most RV supply stores.  Then mix it 50/50 with water, preferrably distilled but that's optional if not convenient, before adding to the tank.  Fill the tank only to the "Cold" mark, since you haven't been running it.  Then watch it after the unit has run for awhile and warmed up to make sure it's at the right fill level.

Depending on how much your system is depleted, you may or may not need a second gallon of boiler antifreeze;  mixing it 50/50 I'd think not.  But the stuff can be hard to find, so be sure you buy enough to carry extra with you for later top-ups.  Better to have more than enough than not enough, and if you buy the boiler antifreeze locally you can always take the second gallon back.

Regarding the tune-up, I tried to do mine last year after some coaching from Beaver Service Center techs, and once I understood the mechanism, changing the nozzle and cleaning soot wasn't tough.  But it was a mell of a hess changing the filter.  BSC parts sold me the wrong one for starters, so be sure you write down the info straight off your existing one before getting a new one;  filters for these things often get changed mid-build, so parts books can be wrong.  Then our filter was hard to reach, and diesel went everywhere around and underneath the HydroHot, even though I tried to be careful removing the thing.  At least as far as the filter goes, which all the techs said was a piece of cake, I'd not try changing it again myself - mopping up that mess, then leaving the bay door open for days to air out diesel fumes (and listening to the buscuit burner complain of the smell) was not worth it.

Joel

Marty and Suzie Schenck:
The Hydro-Hot that came in my 2002 Patriot Thunder came with 50/50 mix regular ol ethylene-glycol anti-freeze per the instructions that I have that came with the coach. To get you by just add a 50/50 mix of same. If it will make you feel more comfortable, after you have filled it and the level stays the same you could always change to non- toxic after you know it is not leaking. My coach is eight years old and I have not had any problems with the Hydro-Hot. Marty

Roger Baldwin:
Thanks for all the suggestions.  We drove 90 miles north to Nocodoges, TX to an RV dealer and bought a gallon.  We mixed it 50/50 and pumped it into the overflow and filled it to the cold line.  It has been running and has not gone down so hopefully the problem is solved.  We'll watch it closely for a few days and then check often. We'll make sure we always have some with us from now on and have already scheduled service with an authorized service rep when we get to the rally in Albuquerque.  Your a brave man Joel, I don't think I would attempt to service it myself and after your story, I know I wouldn't attempt it.  
Regards,
Roger

George Harwell:
The big question is: where did the coolant go? I haven't heard of anyone stealing fluid so it must be leaking somewhere. As you said above you have to keep an eye on the tank level. I found loose clamps on my new 03 Monterey shortly after purchasing it. My owners manual also recommends 50/50 ethlyene glycol although I have seen units requiring boiler fluid. It changes year to year. I too do my own servicing and find it to be relatively easy, just messy sometimes. Good luck!

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