Lube it up!

I've been very vigilant on when to leave the house battery hooked up while plugged in or driving. I'm looking into those options you listed above. Thanks again!

If you learn that the current converter/charger overcharges and boils out house batteries, you may want to change to a modern one like the PD 9245 and replace house batteries.I replaced our two 6-volt Trojan T-105's with equivalent US brand batteries at $99 apiece. The Progressive Dynamics converter/charger works well, and is an easy DIY replacement project. I also installed a Trik-L-Start device which steals some charging current from the house batteries and keeps the starting battery up when rig is parked and connected to garage power in our driveway for long periods.

Thanks!!

Neighbor was in similar situation ... set him up with local mechanic who still knew how to work on vehicles with zero electronics (his own mechanic wouldn't touch it) ... then took him down to local propane dealer and had the propane system inspected/filled.

Consider new batteries (Costco), replace interior light bulbs with LED (lots of threads/links on that subject), and take some time to look for threads on replacing converter with modern/smart converter (less than $200).

Agree with other comments .. get fluids changed (brake, transmission, radiator, oil, etc) and have brakes inspected. Should also consider having tires unmounted and inspected by dealer (RV tires rot from inside out).

Might consider spending a $100 or so and have the rig pressure tested to spot any potential roof leak issues.

Hope this helps.

Brake fluid flush.
Chassis battery load test or carry jumper cables.

I would add rear axle grease(oil) to your list. and brake hoses, I ruined a new tire 200 ft from installation due to a locked up caliper just a couple months ago. Old hoses tend to brake on the inside and cause a check valve effect this causes the caliper to not return when you let off the peddle. Another thing I would do is take it to an RV dealer for a safety check of the coach systems. Mine found a fitting leaking on the LP regulator. I had them replace the whole regulator (28.00), and date code your tires, replace them if they'er much over 5 years old regardless of tread remaining. Peace of mind will make your life easier and safer for you and the ones you share the road with.

The independent guy that is always busy but always has time to talk to you.