He is talking about repair insurance (aka extended warranty/service), not collision and liability. Progressive can't help with that.
Wrench18, I believe you should re-think your request. The price (premiums) for repair insurance on an old RV are going to be major, probably thousands annually. You can just bank one years premium and keep it as a reserve to spend on repairs. Replenish it as needed and odds are several-to-one that you will spend much,much less over a 5 year period.
If you feel it is worth it, you can probably get a powertrain only warranty to cover the engine and tranny, but be careful about what they cover. RV owners tend to think of "engine" as everything needed to make it go, but service plans often make some fine distinctions. The radiator, for example, isn't part of the "engine". Neither is the fuel lift pump (brings fuel from tank to injector pump) or the alternator. Some parts, even internal ones, are considered "wear & tear" components, as are some seals.
2004 American Tradition; 2014 Buick LaCRosse
Homebase in the Ocala Nat'l Forest near Ocala, FL