So my truck has been getting pretty bad mpg's, roughly 13-14mpg instead of the 16-17mpg I was getting previously. Took it into my local diesel specialist, and they suggested a new EGR valve and advised that my crankcase breather was also plugged, and needed replacement. I've seen posts and things about doing an EGR delete to improve mileage, and was wondering if there was something I could do for my truck to help it out, above and beyond just replacing the EGR valve and breather. I'm trying to do a lot of the work myself to save some money, and I also believe as a female it's probably important to learn a lot of truck maintenance anyway. Suggestions?