Hey, I've had tons of experience towing with my Raptor, overweight, etc, going up the grapevine in Socal, even the mountain roads here, I see 5 or 6 vehicles catch fire going up the mountains every year, all of them are motorhomes or trucks towing trailers. A lot of people are not knowledgable, hense why you need an advanced driver license here in BC when towing a fifth wheel of a larger size. Just giving you advice is all, wouldn't want you blowing your motor or worse, there's no parts available right now to deal with a major repair/replacement.