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I pull a 20K lb fifrh wheel in the mountains of TN and NC. Always put in tow/haul and use 1st setting, manual, when on flat ground. When I get into the mountains I switch to the 2nd mode, auto. Manual does a good job of slowing you down and will get more aggressive every time you touch your brake. In the mountains when I top the grade, I will tap the brake to let it know the speed I want to keep. I set back and enjoy the drive from there.
hooper, your last couple of sentences are why several of us don’t use the automatic engine brake setting and use the transmission in manual when using the 1st setting. We don’t like our engines to rev high. I know that the higher rpm’s help engine braking, but I like to keep revs under 3000. I know, I know……….the engine is rated to 4000 rpm’s, but I just prefer not to wind that bad boy that high. I don’t think my engine has ever been over 3000 rpm’s even on uphill interstate entrance ramps. The Power Stroke is awesome !!
Different strokes for different folks (pun intended).
But keeping the engine below 3000 RPM takes away a lot of the effectiveness of the exhaust brake. Remember, the faster you spin the engine the more the braking force is generated.
You are missing the best feature of a diesel besides the power of course. Button press 1 stops you as fast as possible. Use this for everyday driving unloaded. Side benefit it heats your truck up faster in the winter. Button press 2 or Automatic is what you want for downhill in the mountains. Come out of Eisenhower Tunnel press twice and you will go that speed until Silverthorne. I don't use cruise control. No need to. The truck will also shift on its own to match speed and rev pretty high at points. So it is a bit of engine and exhaust braking.
No sorry, on the Ford activating the exhaust brake does not warm the truck up faster. That's a Ram thing.
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