Correcting my prior post, I meant to say "indirect DPF injector"
newer Cummins 6.7L ... 5w40 vs 15w40
- Thread starter NiwradND
- Start date
To reiterate my point, photos from another forum. I don't see how the 15w cold flow experts insist 15w can be blamed for chunks missing out of a roller cam after only 50k miles. This particular case is clearly not deposit related and has nothing to do with solid vs hydraulic.
OVERKILL
$100 Site Donor 2021
Ch-ch-ch CHINA!
Have we somehow forgotten how to make roller lifters? No. Have we outsourced them and their metal to places with questionable QC to save a buck? YES!
^^^^^ and he wins the toaster!!!!!
Yes, 5000 mile oil changes. Mainly because of the emissions crap that creates soot levels that are not good for any diesel. Also, I do not get the opportunity to work the truck as hard as I would like to.
I will say, my 2006 went 180,000 miles with egr intact and then 140,000 without it. It didn’t seem to be any worse for having had it.
I’m not sure what the hyper skepticism of EGR is on these engines. I mean, the exhaust gas originated in-cylinder. If fuel is well atomized and combustion is clean/complete, exhaust gas should be relatively harmless to reintroduce.
For the record, I’m with you on shorter than 15k OCI for those of us that can do cheap oil changes and trucks that regularly see around town grocery getting as much as they get real workout mileage at operating temp.
I always use Rotella T6 5w40 and Primarly the Fleetguard Stratapore LF16035 or the Mopar MO285 every oil change. I figure with this choice, the internals stay healthier/cleaner.
Getting back to the emissions issues with these trucks pre DEF, many have had CEL issues because of 02 Sensors, EGR, Grid Heater and DPF sooting up. These headaches started with Ram Owners in 2007 when the emissions components were added.
My prior truck, 2002 F350 with the 7.3 Power Stroke, had no emissions like the later trucks. The oil stayed pretty clean between the 5000 mile oil changes that were required. The 7.3 held 15 quarts of 15w40 with easy access to the oil filter. Never, had a CEL in those days. This engine was manufactured for Ford by International, what a reliable engine.
Getting back to the emissions issues with these trucks pre DEF, many have had CEL issues because of 02 Sensors, EGR, Grid Heater and DPF sooting up. These headaches started with Ram Owners in 2007 when the emissions components were added.
My prior truck, 2002 F350 with the 7.3 Power Stroke, had no emissions like the later trucks. The oil stayed pretty clean between the 5000 mile oil changes that were required. The 7.3 held 15 quarts of 15w40 with easy access to the oil filter. Never, had a CEL in those days. This engine was manufactured for Ford by International, what a reliable engine.
My 97 7.3L makes black oil pretty much as I pour it in.
It's got about 6000 hrs on it, so nothing crazy. Regularly see trucks with 5x that.
Yes, under warranty the first time. There was an issue with the 02 Sensor wiring harness, Chrysler/Cummins had an upgrade concerning the wiring harness. Apparently, there was a fix to upgrade the diameter of the wiring within the harness according to what was explained to me. This was supposed to ensure the 02 Sensors would function better to keep the soot from building up on the 02 Sensors and ensure everything was burned off within the DPF. This fix was not the cure all in at least in my case. I have replaced the 02 Sensors two additional times on my dime. I have always felt this situation was a design issue and should have always been covered on an extended warranty issue on Chrysler's dime.
My 97 7.3L makes black oil pretty much as I pour it in.
It's got about 6000 hrs on it, so nothing crazy. Regularly see trucks with 5x that.
My 2017 made the oil black, pretty quick. Tested at .58% soot. Since deleting, the oil turns black, pretty quick. Tested at .44% soot.
3 oil changes post delete.
Mine was .1 after 5900 miles stock.
But with 50% towing. The EGR dropping EGT’s is pretty much the cause for DPF issues not doing passive regens.
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It's possible as time goes on with future oil changes, you may notice the oil getting a little lighter in color?
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