Hi. Thanks for your feedback! I had noticed the Meguiar's products in my research, but have not purchased any. I pursued LA's Totally Awesome as it was identified for removing the black streaks. I had some success with it on the decals, but was not a home run. Decided to experiment with silicone spray since I had purchased some for treating rubber seals. This worked fabulously! Don't know if it was the silicone or the mineral spirits that did the cleaning. The results were spectacular after 2 applications. I will further put it out there to warn everyone: DO NOT WAX FLAT FINISH GRAPHICS! Particularly if black. Previous owner did this on mine and it looked bad. Shiny graphics are a different story as the wax did not get trapped in the material.
When you think about what’s involved to make the Alde system work, simplicity isn’t the word I’d attach to it. It’s a great system and we haven’t had issues with it, but it has many potential failure points vs a forced air system.
You’ve got a continuous loop of glycol contained within several yards of plumbing and any leak or weak point means the entire system could be out of commission. Forced air is simple. Maybe not as quiet but after experiencing a Truma that may be up for debate.
I have to agree with some here that it’s a love/hate relationship with the Alde. After experiencing the Truma Combi I would probably dump the complexity of the Alde. It’s A LOT of infrastructure for such a small camper. I think the Alde is more justified in larger campers where evenly distributed heat is more important. The Truma is so quiet and just requires small ducts to be run. No glycol swaps. In the 400 you might even gain some width up by the dinette if you omitted the Alde (because of the convectors).
I kind of agree with you. I think they should start using the Truma Combi unit. Same size intake/exhaust and will fit in the same space as the Alde. Then remove the Dometic Cool Cat and replace it with the Truma Saphir AC unit. Heat, hot water, and AC all with a single control panel!
@grassgd, I did take some pictures of new Rhomar fluid compared to the 2 year old Rhomar fluid I drained and pH test strips on both samples. The top pH strip is old, bottom pH strip is new. It is hard to see much difference in the pictures but the old looks to be closer to 9 while the new looks to be closer to an 8. The old Rhomar fluid is definitely not as clear as the new
@Maple_Geek I'm guessing that all the expansion tanks have the aluminum sleeves that @Freespirit pictured above. Would it be possible to look into the tank and see if you have similar corrosion?
Trying a little experiment. I just put two strips of aluminum in separate glasses of glycol. One with fresh Century and the other with fresh Rhomar. It will be interesting to see if there are any differences in corrosion over the next months or years.
@AnOldUR my expansion tank is annoyingly located behind the cassette toilet in the small bathroom and is not at all easy to reach. When I finally find some time to do this operation I'll see if there is a way to remove it and look.