Re: WallyWorld SuperTech 2-Cycle Oil
Member LubeDude:<br /><br />Your example is not two stroke oil. Two stroke oils will contain few if any of the heavy metal additives you list ie: B, Mg, Ca, P, Zn, Mo <.02-.03%. Instead tcw3 oils base much of their additives on ash-less nitrogen compounds ie: hydrazine. Two strokes use a lost-oil system. Oil is injected, burned, expelled, and new oil is replenished. Your example is an automotive no-loss oil system with 22,000 miles on the same ash-containing oil. <br /><br />The oil analysis you listed does not reference the level of proprietary additives present when the oil was new. The analysis only compares the additives to a standard that the oil analysis company has set. It meets half of those anyway. When looking at what you are calling depletion, you must reference the same new oil as a baseline. Maybe it didn't meet the additive levels when new. You must also take into consideration that the sample is now saturated with contaminates, fuel, etc. displacing the additives measured. <br /><br />Additive depletion is a bad term in oil science. Oils contain detergents, dispersants, and anti-wear additives. In a two stroke none of them go anywhere or deplete until they are burned. They only become displaced. <br /><br />Zn sometimes called zinc dialkyldithiophosphate, zinc dithiophosphate, or zinc phosphate is primarily a metallic anti-wear additive that only comes into play when there is metal-to-metal contact ie: piston/ring scuffing. Metal-to-metal contact is not a normal occurrence and thus the Zn is rarely used. Mo sometimes called molybdenum dithiocarbamate is another metallic additive that can protect rings in high wear situations but it generally isn't needed and rarely used by the engine. If Zn and Mo levels drop in an oil sample the missing Zn and Mo can be found still in the engine embedded on the metal surfaces and parts. Otherwise it has exited the exhaust system.<br /><br />Dispersants and detergents are synergistic. They work together or mutually in groups of two or more. Detergents clean contaminates while the dispersants suspend those cleaned contaminates. They don't deplete or go away. But they can become over worked and over saturated. They become displaced. <br /><br />Fill your kitchen sink up with water. Add 5 drops of concentrated dish soap. The soap contains oil dispersants and detergents. Begin washing fry pans of bacon grease. Soon the detergents can no longer remove the grease and the dispersants can no longer suspend the grease in the water. The bubbles are gone. Lumps of bacon grease become present in the water. But the soap hasn't depleted or gone anywhere. It's still in the sink in the same quantity as it was before. It is displaced, sitting there doing its maximum job.<br /><br />Wal-Mart oil is a good oil that meets the specs for your outboard. It has worked well for a lot of people and it meets the nmma's testing. I doubt you'll ever know exactly what blend of additives are in it. If you ever have trouble with this oil, then it will be a result of the nmma setting their standards too low since it meets or exceeds them. You'll find very little information on two stroke oil that isn't anecdotal. Trust the nmma.
