Pretty much what you are doing is what should be done. I use Amsoil products in everything I own that has a combustion engine. I set up a calendar of maintenance for the vehicles and follow it. As long as you are doing regular fluid changes, and inspections there is not a lot more you can do.
Remember time, not mileage with RVs is really the important issue. We may not put a lot of miles on the machine but it still needs regular fluid changes. Many times I would be changing oil in something that had only gone 500 miles but was at the year interval.
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2018 Greyhawk 29MVP-Sold
2023 Jeep Gladiator Mojave
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