Yes there are some basics to stretch that fuel a little more before fill ups!
1. Keep your lead foot out of the pedal - lol! I do it all of the time, I got to test the power and enjoy it, yes it eats up fuel! Spool back and take it easy on take off and driving, it will make a difference.
2. Inflate your tires! Basic but it works, make sure you have them full especially if you are hauling.
3. Plan your trips or spend more time at home: Of course, easier said than done if you have children but plan the trips out and don't go out just for something to do! Every time you go out it costs you so make it count.
4. Find the lowest price for fuel in your area along with discount programs. There is even apps for your phone to find the best prices.
5. Make sure your diesel truck is serviced regularly since clogged systems and filters will effect your fuel mileage. Find a local reliable shop or do the work yourself but make sure your truck is working properly.
6. Use some form of diesel fuel additive at least every other tank since the quality of fuel from stations have degraded over the years. This will help in keeping your system clean and efficient. I know about once a month I put an additive in a full tank and find a remote entrance ramp where I floor it to at least 80 mph to get out on the highway for at least 3 times. This helps clean out the stem and it feels like I had a tuneup.
7. If you feel you have sticking injectors or running rough there is a couple of products on the market that will do a clean out of all components using my method mentioned above, I have used CRC Diesel engine clean, Opti-Lube, Gold Eagle and Howes! But there are many out there that will do the same, they are not cheap but can be had for less than $30! Pretty cheap tuneup!
8. If you have older tuner diesels you can dial them back to use less fuel and on newer models there are boxes that are legal in 50 states that can make a difference if used properly.
Just a few thoughts I'm sure many of you have thought of but now is the time to use them since fuel it seems for the time will remain expensive.