Chevrolet Cruze Forums banner

101 - 103 of 103 Posts

·
Registered
Joined
·
456 Posts
I'm hesitant to run additives since I haven't had it confirmed that they are 100% OK to run in these
It's advice I've read from Karmakanix (VW specialists) in Berkeley CA: Always run an additive in diesel fuel for DPF-equipped vehicles. Using a cetane booster means the fuel has better combustion characteristics and will more thoroughly burn in the cylinders, constantly reducing the soot load in the DPF. It prolongs the life of the DPF with fewer regen cycles to go through.

I have no idea whether this advice is good, but it's out there.

Customers should know that Karmakanix advises the continuous usage of diesel additives such as Stanadyne. Aside from lubricity issues that can cause total system failure due to metal flake from failed pumps, these additives also reduce the overall amount of soot generated. This will clearly increase the service life of the Diesel Particulate Filter.
 

·
Registered
Joined
·
167 Posts
Discussion Starter #102
It's advice I've read from Karmakanix (VW specialists) in Berkeley CA: Always run an additive in diesel fuel for DPF-equipped vehicles. Using a cetane booster means the fuel has better combustion characteristics and will more thoroughly burn in the cylinders, constantly reducing the soot load in the DPF. It prolongs the life of the DPF with fewer regen cycles to go through.

I have no idea whether this advice is good, but it's out there.

Customers should know that Karmakanix advises the continuous usage of diesel additives such as Stanadyne. Aside from lubricity issues that can cause total system failure due to metal flake from failed pumps, these additives also reduce the overall amount of soot generated. This will clearly increase the service life of the Diesel Particulate Filter.
Thanks, Barry ... I think using a cetane booster likely eliminates (or mitigates) the possibility of troubles from poorer fuel ... and apparently there is a lot of it out there so it's probably a good idea. At this point I am almost certain I do not have a soot load problem, though. My last post was a novel that I wouldn't even want to re-read myself, but the long and short of it is that a relearn was never performed when the new DPF was installed and as a result my differential pressure values are way out of whack. I'm also uncertain about the previously mentioned hole in the DP sensor pipes. The data pulled yesterday showed a soot load of 97% as calculated by the sensor, and a 31% load as calculated by all other engine data (not sure what exactly that includes). Between that, my superb fuel economy, drivability, very short regen durations (~5 minutes), and oil analysis, I think its actively regenerating with less than 50% actual soot load in the DPF every time, due to improperly calibrated DP sensor. So I do not think there is any variable I can change that will make a difference. I might try the additive for other reasons, one being the engine and fuel system seem healthy so why not keep them that way.
 

·
Registered
Joined
·
167 Posts
Discussion Starter #103
Credit where credit is due, I did actually hear back from the service lead at dealer #1 and he listened to and understood what I was asking about the relearn. He said it was unclear from the job notes if the reset was actually done, and they will take the car in next week to make sure it is calibrated right. So fingers crossed.
 
101 - 103 of 103 Posts
Top