Compression Ignition Addict
Join Date: Oct 2010
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To answer a couple of your questions.
DEF tank holds a little over 5 gallons. On avg you will get about 1000 miles per gallon. That will vary depending on how much you tow and how cold of a climate you live. DEF freezes at 13°. I think some guys spend the entire winter with their DEF frozen and never use any. It does have a heater that thaws the tank and the truck runs fine while the tank is frozen. If you do a short commute, it may never thaw because you didn't run the truck long enough. No big deal computer adjust for it.
Rapid Heat is just what you describe. A heater coil. Think 1500 watt hair dryer. It does help to get things starting to warm up. Especially getting the windshield defrosted. But it will not create a warm cab instantly. It is automatic. Turns on when ever the coolant is below 80° and the ambient air is below some preset temp. Turns off as soon as your coolant hits 100°. totally transparent to you the operator. No switches, no idiot lights. If your truck sits outside all night at 5°. it is still going to take 5miles of driving to get your cab warmed up.
Exhaust Brake. Again, there is no switch, no idiot light, It is totally out of the drivers control other than you press the Tow/Haul button. EB works in Tow/Haul, Does not engage if you do not select T/H. I find the way Ford implemented the EB is different than what some folks think of. It does a good job of holding a speed down a grade. It does a lousy job of Stopping of slowing a truck. I can top Parleys Summit on I-80 slow the truck to 50 mph, set the cruise and never touch my brakes for the 20 miles of downhill grade while towing my 13,000 lbs of horses. But if I'm going 70 mph and want to slow down to 50 mph, It's not going to do that, I would need to touch my brake pedal. If you have expectations of coming down a hill and pressing a button and hearing the Braaaap Braaaap, You will be disappointed.
2015 F350 CC SRW LWB Lariat, Leveled, BAKflip, Ultra Predator wheels with Toyo A/T 295/65R20, Firestone Airbags and onboard compressor
2011 F350 CC SRW LWB Lariat - Gone
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Last edited by Painted Horse; 01-20-2013 at 07:42 AM.