We pull our travel trailer 6-7 times a year but otherwise I use our L5P for errands in a town with red lights every 500 feet (retired). I make about 80 miles in town before a 20 mile ride thru the country to regen. Filter performance on trips, towing or solo, is not an issue. The truck is obviously not practical for in town driving, but I've got what I've got, and I live where I live. I'm searching for ways to optimize the cycle -- either accumulate soot slower, or get better regens. I have a Banks iDash 1.8.
- REGEN CLEANING: Experimenting with different speeds/gears for the regen ride. Currently looks like 65-75 MPH, cruise control, IN 5th GEAR , seems to regen down to a lower number. The slightly higher RPM's produce a little more heat but I may be kidding myself since higher RPM's would also create more soot at the same time. I'm getting end of cycle numbers at 8-10% using this method. Best ever was 6% on a forced mobile regen from the i-Dash. Any experience on other driving conditions that seem to give cleaner regens?
- STOP AND GO DRIVING: Experimented with not taking the shortest route in town and that has some promise. IF I go the long way around and get the EGT4 temp above 400F the filter % seems to grow much slower. However, really hard to maintain 400F - once I enter the red light que's it cools down to 350 pretty fast, or a 10 minute stop will drop it to 250 or so, and it won't warm up again without more uninterrupted driving........even at 100F ambient.
- I'M WONDERING ABOUT INSULATING THE DIESEL EXHAUST FILTER (ONLY). Seems like that would help all the time - in town and on highway. Setting aside how to do it and the downsides when it is raining, is there a reason not to try this? Would it get TOO HOT pulling the TT up the mountains ?
- FUELS: I track a lot of data around regen cycles including various fuels. I've seen suggestions that fuel brand will impact DPF loading but I just haven't seen a difference. I only use branded fuel - Texaco, BP, Shell - and from stations that are relatively high volume. Never used the traditional Pilot, Loves, TA, etc, as I am concerned about their quality and moisture levels in spite of the high turn-over. The branded fuels I'm using are less than 5% bio-fuel but the Pilot and TA stations here are "up to 20%". Would these commodity fuels with higher bio-diesel be better or worse for the regen cycle life?
- MORE TEMPERATURE: I've considered looking for an AC-powered heating pad to mount around the DEF to get it warm before my errands even start. May be hard to find a sheet heater that will withstand the 1200F regen temperatures, and wouldn't be worth doing unless it could get it up to 200F or so.
- PARTIAL DELETION?: Instead of an outright deletion, could you remove the filter and use a long drill bit to put small holes thru the core of the filter and then reinstall it?.....to reduce pressure drop across the entire cycle but not open it up so much that the computer detects it when clean? Just a wild thought -- I'm way beyond my headlights on this one, but ultimately this thing works off differential pressure, yes?
.....and before you suggest it:
A) I previously had a nice Jeep I restored for in-town errands, but this truck cost so much that management "suggested" I sell that along with my Tundra to offset the L5P cost. That might be a future solution, but things will have to cool off a lot more.
B) We could move further out of town or to another town but ..........see A) above.
C) Why not trade for a gas burner? I will probably do that before the 3 year warranty is up, but the 2019 gas truck was very disappointing in performance and trim (dealers don't order gas burners in LTZ), and I don't buy the first year of redesigned models. Timing of that change will ultimately be dictated by ........well......see A) above.
D) Quit bitching about a decision you made without due dilligence - just live with it and shut up. I'm not bitching, I'm just looking for ways to make it more tolerable.
I know this isn't a huge problem for all of you folks out there that are still working and commuting, and let me just add that we retirees really appreciate those social security contributions you continue to make. Meanwhile, any thoughts or experience on silver bullets that extend the cycles??