The basic drivetrain warranty is 5 years or 60,000 miles regardless of ownership, so goes with the vehicle from owner to owner until either time or mileage limits are met.
The 10 year 120,000 mile warranty was available only to the original purchaser and transferable only to immediate family members, and was more of bumper-to-bumper type deal. If interested I'll dig out my original paperwork from the Dragon for additional info.
Our '99 Iron Man with over 120,000 miles will get 20 - 21 MPG on highway, while the '01 Dragon tags about 18 - 19 tops. There are a lot of factors involved with mileage, not to mention just variance inherit in mass production. You run a lift and oversize tires, right? It's a no-brainer your economy would suffer. And if you Line-X'd your cladding then you've practically introduced the aerodynamic equivalent of a drogue chute. But then again your focus is off-roading, not highway economy. Everything's a trade off.Originally Posted by SPAZZ
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As for the 4BD2 diesel, you'd be lucky to get in the high 20's for mileage. The correct drop-in diesel is the 4JG2, although the 4BD2 would work with some fitting. The real benefit to using the diesel is bio-diesel, which anyone can make in their garage. With average cost to produce at less than $1 a gallon and the environmental benefits it's a compelling reason to convert.
All too many people are making wild claims about diesel having incredible mileage. It simply isn't true and the facts are all too easy to obtain. But when fuel prices skyrocket sensationalism ultimately takes hold, and it'll only be a matter of time before our generation's "100 MPG carburetor" appears with the power of the internet propelling it into legend status.