Hi Bob, We purchased a plan when we bought our Beaver two years ago. US Warranty Corp in Ohio. Was about $5800 for 4 years, 100,000 miles. Covers almost everything, $100 deductible. Used it twice so far. Biggest repair so far was for dash A/C. A CAT dealer spent 13 hrs on the problem and the warr. Co. would pay only about half the labor hours according to their 'flat rate' book. They did pay for a new A/C compressor, so in the end, they picked up about half the bill. On a diesel pusher, I think its a wise investment; we'll see what breaks next!