Kate, I have a 37’ Challenger with the F53. I’ve driven it, solo, 3 times cross-country OR-MD thru the Blue Mountains on I-84 and the long 6% grades in Western MD, and once from SoCal up I-5 back to Portland via the Siskiyou Pass. All while towing a relatively heavy MKX. Yes, the screaming engine is loud. Yes, it revs alarmingly high. But that engine braking gives great peace of mind on those long downhill grades where you only have to tap the brakes briefly a few times. I usually use Tow Haul but not always. The Ford manual has a good explanation of how and when engine braking kicks in. High revs are your friend in the mountains. In WY I didn’t use TH as much and just tapped brakes when needed to keep the speed down. Enjoy your travels!
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