The Q&A recommended that an oil change inverval of 50,000 miles for the absolute longest wear from an engine but this is usually unnecessary in most cases. The 150,000 mile/3K engine hour mile interval is usually fine for most people since other parts of the car will start failing well before the engine does. Remember that the company offers a 300K mile warranty for engines equipped with SynLube since new. This warranty holds for the 150K mile intervals.
SynLube supplies oil filters that are of sufficient quality to last for the term of service they advise. This will vary with the car. I believe that currently, they are offering the upper level Fleetguard filters plus upper level GM filters that are designed with far better components than are usually available from auto parts stores.
I am using a CM filter that is rebuildable and filters down to 8 microns. It's flow capacity is so high that it doesn't even have a bypass valve. I believe I have discussed them and provided a link.
Beyond the solids, the advantage of SynLube is the inert qualities of the formula components. With this oil, problems like acidity are avoided in the first place. Dino oils that will form acids due to the interaction with contaminants introduced to the oil through poor sealing at the rings. Consequently, they need a high reserve TBN. This is the reason for the Cummins spec. When the reactivity of the oil is avoided, Cummins engines, I'm told, work fine with SynLube.
Another standout feature of SynLube is the additive package. At the price SynLube sells for, the additives (some of which are actually not necessary but are there for standards purposes) are of the best quality. The higher quality additives often tend to take up less of the total volume of the product. This is important as some of the additives have no lubricating properties in themselves and are there only to protect the oil from its environment. Dino oils often have up to 20% of their volume dedicated to additives.
In contrast, oils like Mobil 1 don't have the best additive package. Since the base oil is so much more expensive than virgin dino, the only way the Mobil 1 folks can compete is to cut back on the additive package.