15W-40 oil for 7.3L PowerStroke

[SteveH]

Originally Posted by tjdonahoe

The fuel is injected in the exhaust after the engine , the level goes up because of the soot from reburning the a portion of the exhaust, the cj 4 oil was developed to carry the contaminates ,just my take on this

My understanding is the fuel was injected into the cylinders on the exhaust stroke, and that's how it got into the engine oil over time.

Anyway, I know for a fact the oil level goes up, and that is one of the ways the 'puter knows when to change the oil.

Anyway, I no longer have the problem.

[Airstreamer67]

Steve, have you considered that with less fresh oil in the engine, the contaminants represent a higher percentgage of the total as they fill up the crankcase? This could mean less engine protection in two ways: a higher percentage of contaminants, and a longer time the engine has to suffer them.

[SteveH]

Originally Posted by Airstreamer67

Steve, have you considered that with less fresh oil in the engine, the contaminants represent a higher percentgage of the total as they fill up the crankcase? This could mean less engine protection in two ways: a higher percentage of contaminants, and a longer time the engine has to suffer them.

Yes, I've considered it. We're talking about one quart in three gallons, maybe, and there is a filter.

Additionally, I've been having samples of the oil that is drained out tested frequently with no issues found.

[crispyboy]

If you watch Napa's website they sometimes have Valvoline Premium Blue 15w-40 on sale for $10.99 gallon. This is an oil approved for the Cummins Engine though other properly rated oils are fine too. I only go 5k oil changes due to the emission components. If they were removed I would go 10k for sure with a synthetic oil.
The 2007.5 and newer Dodge trucks use an algorithm based upon how you drive the truck for when the oil gets changed.
I usually go with Hastings filters (same as Baldwin) or I can get the Mopar filter from Walmart. I would also be comfortable with a Napa Gold filter since it is a Wix brand in disguise.