ControlNode
Well-Known Member
- First Name
- John
- Joined
- Nov 29, 2021
- Threads
- 16
- Messages
- 1,711
- Reaction score
- 3,647
- Location
- Eastern NC
- Vehicle(s)
- 84 Civic "2000S"/16 Focus RS/21 Ranger XLT
- Occupation
- Computers
Well, Chris paged you and I'm John. Anyway, on to more of my thoughts on it: The only reasons for a reduced rating I can figure would be related to power or thermals, the chassis and brakes don't care about altitude. The turbo on the engine makes it so the engine appears to care less about altitude (especially from driver's POV without looking at lots of extra data from the engine), but the turbo may be putting some work in to pull in enough air at high altitudes and could be creating more heat. And I'm not really sure if thinner air at high altitude reduces thermal transfer from the radiator or not, but I would guess it's possible for less dense air to pull less heat away. Maybe even at 10,000 ft any thermal transfer difference is so small it's not really a concern.Hi Jason,
Chassis wise, the truck does not know it is at altitude. The motor does... The reduction in towing capacity you quoted is to maintain Sea Level performance. You can tow at altitude at 7500Lbs but you can expect degradation in performance.
Best,
Phil
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