The DCP does have more additives than the typical buck a quart SL oil and I believe it also would clean an engine a little over time but maybe not from a conventional type additive we usually see through analysis though .
Here's a partial pull from another site with additional info on some testing of the topic oil. You will note they tested the DCP to their own DC along with noted consumption being reduced over the course of 22k miles showing signs of it's cleaning abilities since consumption was not said to be stopped immediately .
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Cleans away deposits and sludge build-up - In head to head field, engine and lab deposit tests against Mobil Drive Clean conventional oil, the Mobil Drive Clean Plus High-Mileage formulation decreased the level of deposits in both the lab bench and engine test. In severe duty field-testing, it reduced the precursors that form deposits.
Conditions seals to prevent leaks - In a laboratory seals test, the Drive Clean Plus High-Mileage Formula helped control seal shrinkage, which occurs over time and can cause seal leakage.
Restores engine performance - A combination of three separate studies demonstrated that the Drive Clean Plus High Mileage Formula helped to: 1) Control deposits and improve piston ring sealing, 2) Provide both improved high and low temperature deposit control, which leads to better oil flow, improved engine cooling, and improved operation of engine rings, valves, and other critical engine parts, thereby restoring engine performance.
Reduces oil consumption - During a chassis dynamometer roll test of an engine with high amounts of sludge, high oil consumption was measured. Using Mobil Drive Clean Plus High-Mileage, oil consumption was reduced from approximately three quarts of oil every 1,000 miles at the start of the test, to one quart every 1,000 miles, after running the engine 22,500 test miles with normal oil changes of Drive Clean Plus High Mileage Formula.
[ June 23, 2004, 04:50 PM: Message edited by: Motorbike ]
