kfscoll
Member
- Joined
- Jun 15, 2022
- Messages
- 45
- Reaction score
- 38
So, as I predicted, I jinxed myself. My 24-hour timed regen started during my trip today just as I expected, but I had to stop and park in the middle of the regen, and I didn’t really get up to highway speeds for very long during the regen, so I don’t think it did the greatest job. Anyway, about 30 miles into stop-and-go traffic after the regen completed, the first segment on the DEF gauge lit up. I figured I’d just drive around for a while to passively-regenerate it away, but at that point it was rush hour, so I wasn’t able to maintain 70+ mph at all. Eventually the second DEF gauge segment lit up because of all the stop-and-go traffic on the interstate. I decided to park the truck at this point after having driven about 100 miles since the regen completed. I went back out this evening and was able to get the DEF gauge back to zero by driving at around 80 mph for another 100 miles. Now that I’m back down to zero and have a full tank of fuel, I’ll see how it goes from here.I hesitate to even mention this because I’ll surely jinx myself, but after I switched to using Marathon fuel, burning off the remainder of the BP fuel I’d been using, and omitting any additives, the DPF gauge on my truck hasn’t moved off of zero. This is even with 50/50 mixed city and highway driving. I’d say it’s acted this way for about the last 400 miles.
i find it hard to believe fuel could make such a huge difference in regeneration frequency but so far I’ve seen a marked improvement. The Marathon I go to is right next to a huge steel manufacturing/processing plant, so I’m pretty sure the fuel gets fairly regular turnover. Not only that, it’s crazy cheap — I’d say it’s easily 50-60 cents/gallon cheaper than any other gas stations in the region. I’m keeping my fingers crossed that this behavior keeps up. Tomorrow I have to drive a 70-ish mile round trip, and I should hit another 24-hour timed regen along the way, so we’ll see what happens after that.
its just so weird since prior to my truck beginning to behave itself the gauge went from zero to 3/8 full in the space of about 30 miles which was very unusual. I figured either something finally broke hard or maybe I got a dodgy tank of gas. The jury is still out, but I know I won’t be returning to the BP I had been using. It definitely gets zero big-rig traffic, so who knows how long their fuel sits around.
The unpredectability of the soot loading is a real pain in the ass, and meanwhile I have 25.5K miles on the truck in 16 months because of obsessively trying to keep the truck from initiating a soot-load based regeneration. At least I am able to get mine to reliably passively regenerate unlike some of you folks, but I sure wish Chrysler could get their arms around this issue.