We just picked up our new Clipper 108ST today! We are towing it with a 2014 Chrysler Town and Country minivan. Our van has a fuel economy button on the front dash that says "econ" that supposedly gets the van better gas mileage when turned on. My question is whether its best for our transmission to tow a trailer with this econ button on or off. We can't find any clear answer in the user manual. Any advice about this? We really don't want to put undo wear on our transmission.