DEF is used with a Selective Catalytic Reduction (SCR) not a particulate filter. DEF is used to reduce NOx emissions not particulate emissions.
2026 Ford Bronco 2.3 MPC now has a GPF
- Thread starter Harleydav91
- Start date
What sort of maintenance do these particulate filters require?
They operated without any intervention from the driver/owner for the most part. They do eventually fill up with soot/metallic particulates that cannot be burned out but when sized correctly for the application the vehicle will fall apart before the GPF fills up. The driver might also need to go on a longer drive to "regen" the GPF if they only granny cycle it.
CleanSump
Site Donor 2026
USe what the manual says. If it says mid/low SAPS, don't think it's some stupid CAFE scam or other conspiracy theory. Use high SAPS and you will clog it. Don't make the argument that if you aren't burning oil it won't happen. The engines have PCV/CCV & EGR and it will.
GPF were added to Ferrari engines 5 years ago. Some do not like them as they somehow muffle the exhaust sounds.
ali
ali
I kinda like the idea of breathing less soot.
I thought the future included a reversed direction on all rates the anti pollution efforts. Not yet?
Direct Injection produces more exhaust soot, so they had to add a GPF to treat the soot (capture it). With that in mind, using the wrong oil eventually may plug it up. I have no idea how long this could take. The way the average person drives now probably isn't helping, by that I mean painfully slow acceleration. I have been doing a little research on this since I was concerned my Mini F56 had one (BMW B48, MY 2020) since it's DI and the exhaust tips are very clean, compared to my 13 GTI, it was a soot mess. Minis in Europe started getting GPFs around 2020, it's a separate can. I don't see one on mine, but I'm wondering if it's integrated into the cat, which would be unlike the Euro cars. I usually manage 2-3 WOT pulls a week not just to keep the system cleaned out, but I would think it would make a difference. I really don't like being part of an experiment like the diesel guys, which hasn't worked out great.
Seems to me like this is the textbook application for ESP 5W- or 0W-30.
