Had a truck (+09) run a Regen on me today. Got my attention.

I have an 08, Cummins, 435, and we pull heavy grocery type loads over the mountains up and down I-5. Not heavy haul, but our average load is 44k, so the engine gets a fair workout daily. My "regen" light (level 1) comes on about every 10 days...luckily usually when cruising down the Interstate...but I don't notice any increase in noise, or engine RPM, and no loss of power.

I have attempted to pull into a dirt base siding and hit the manual regen (parked regen) switch but it doesn't kick in...I guess it has to be at level 2 to get it to do it's "parked thing".

I noticed one point I question...the OP mentioned unit not getting "good diesel"...do they even sell non-ULSD anymore?

 

Regen time frame can vary, I've had mine go 3 days before regening, and I've had it regen every day. City driving is hard on the buildup so they regen more often.

 

The regen cycle is going to be extended for 2010 and newer products. You are suppose to be looking at a 4 day plus regen cycle.

 

Around here, they sell low sulfur #2 burner fuel\of road Diesel as heating oil for homes. I'm betting that in some parts of the Northeast, that is the case as well.
On the pumps here, they have stickers that say "Do not use in Highway Vehicles" and "For Highway vehicle us Only".

 

So if you have to do a "stop and regen" and you happen to be in El Centro, or Calexico particularly in the summer time, it sounds like you might want to just walk away from the truck. A long way away from the truck, while it is doing this.

I keep seeing things that make me so glad that I'm retired!

 

Mine spent friday and today at the Mack dealer getting two software updates, one for the DPF and one for the engine itself. The DPF is update is supposed to make it more efficient

I've only had mine require me to stop and regen twice, and both times were related to a fault in the DPF that was throwing a code. Otherwise, it regen's when I'm driving, it's done it enough that I can tell about 90% of the time when it's doing. Generally you'll notice a loss of power, "jake" like noises when letting off the throttle (or if the cruise is on and not needed), and other little quirks. Even while driving a regen can take up to 2 hrs, typically it only takes about 40 minutes. They really aren't as bad as everyone makes them out to be.

 

i have an 08 frieghtliner i have never done a manual regen if you start it will it shut off when it is complete?

 

Alot of trucks dont need a manual regen, they'll clean themselves out with normal highway use. I dont see any loss in power or hear any odd noises.

I guess it depends on the manufacturer, I have an 09 International. I've heard Freightliners are pretty bad with the regen thing and clogged DPFs

 

yes, typically it will