I ran up to Oregon from Sacramento in the last couple of days. I've made the run numerous times. This time I started using some fuel additive I bought from some diesel company (Kennedy Smile). So this was the first trip with the additive and hoped it'd clean up and run better.

'07 LBZ with 175,000 on the clock, towing a duel axle single car hauler trailer. Had 2-3,000# loaded on it. It was a large steel shed that was a flat surface. 10.5 MPG going up. One full tank from home to Klamath Falls.

Unloaded trailer and drove down the hill to home. 18.5. I've never gotten better than 17, without anything attached. Still had over 1/2 tank left and I had an empty trailer on the back.

I'm thrilled but am interested in how it all shakes out. Hopefully, this 750 mile round trip will have done all the cleaning necessary and I'll be able to report on what has changed.