Excellent, sounds like you'll be back in business.
Couple things I do to keep my mpg up... In winter the colder it is the more fuel the truck uses to get warm, its the start-up air fuel ratio thats set by temperature...like a choke in the old days. Second is pretty obvious if you think about it...winter gas formulation, you wont get better mileage on winter fuel no what you do. Also, runing synthetics is always a good thing, that stuff about leaking seals is all bull**** unless your truck was made in the 70s almost all oil has had variations of the additive package present in synthetic oil. Another thing, it gets **** cold where I live in WI so I actually just leave my truck plugged in with a timer that turns it on at midnight so it'll warm up to closed loop mode in the first two or three minutes....this alone can save 5 bucks worth of gas well worth the 50 cents in electricity. I have both an oil pan heater and a freeze plug block heater spliced to the same cord. Other things to consider...a calibration update to your truck's computer...either aftermarket or by the manufacturer. This helps in almost all cases, I do tunes myself professionally so I make adjustments to take a cold engine off cat warm up mode as fast as possible...thats alot of gas. Run high air pressure in the winter, get the hanger ons knocked off the body because that stuff can weigh hundreds of pounds when its built up.
In the winter time, a big thing here, people with gas engines especially, if you plan to shut off and start up your vehicle along your route...don't. Here's why, every time you start your engine after it's been off for more than two or three minutes it puts the truck/car back in cat warm up mode until the O2 sensors are reading again...this can take two minutes it itself and cost you a few quarters worth of gas in that short amount of time.
Figured I could help with this since cars and trucks are my daily bag so to speak.
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