I think my big jug of Opti-Lube XL is getting close to empty. Maybe I'll run a few tanks of Archie to see what happens. My driving is so variable, that I'm not sure I'd ever know if it helped with mileage or regens. I get 8-18 mpg, so I just roll with it.
I used to track regens all the time. I barely even noticed one occur on this truck. I think the only one that sticks in my mind was a regen pulling some steep grades and I knew it was down on power. Really had to keep my foot in it and i was seeing 5.8 mpg.....LMFAO
I was hoping for better EPA response on deletes, but it ain't coming. We have emissions testing after year 5 round these parts. I might just do an emissions in tact tune and call it a day. Then hope they eliminate the bullshit in the next generation.