Just bought a used F-250 crew cab 4x4 diesel 09 truck, now my question is what do I need to do to get better fuel milage. I use it as my weekend truck to tow my boat (1500) lbs about 75 miles round trip & my annual weekend camping trip with my 5th wheel (4000) LBS or so about 300 miles from the house. I'm not looking for crazy horse power or anything like that, just a basic dpf delete & reliable tuner. I still have 50,000 miles of warranty for it so I can't go crazy. As is it does 12 city & 16 hwy, Thanks to all and any info would be greatly appreciated.