As you've all read, the 18 Adventure AWD has a tow rating of 3500 while my 15 AWD is 1500. According to the article I read, the only difference is a higher capacity radiator and coolers for ATF and engine oil. I currently have 41k miles and will be out of warranty at 60k and am wanting to increase my safe towing limit to the 18 spec. Yes, the trailer will have brakes. Anyone care to comment on if this is even possible?