Join Date: Apr 2009
Location: Wetaskiwin, Alberta, Canada, Earth
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2 Stroke Oil + Diesel, not so good
As a small engine mech i use to work in a lawn mower shop. Working on everything from chainsaws to garden tractors. Working on 2 stroke engines (especially the old 2 stroke lawn boy push mowers) i noticed alot of gum build up around the exhuast ports and exhuast related components. Like every 2 stroke you will notice gum build up in the exhuast components. this is why they call 2 stokes "Dirtier" engines is becuase they are dirty. The reason 2 stroke engines use the mixture of gas and oil as fuel is to lubricate the engine. They don't have oil filled crank cases becuase due to the porting of the cylinder the carb is ussually mounted ON the crank case. Having the crank case filled with oil it would interfere with the fuel getting sucked up from the carb to the cylinder. Most 2 stroke don't have head valves somewhat becuase of the gum build up caused by 2 stroke oil. Thats somewhat why they have ports in the cylinder is to iliminate moving valves. I thought i'd bring up this topic for the guys that think 2 stroke oil mixed in with thier diesel fuel would improve lubrication in thier injector systems in their diesel engines. using 2 stroke oil in diesels would form gum deposits on exhuast components such as valves, manifold walls, and even turbo impeller fins. Maybe resulting in higher EGT's and sticky valves? It might work well for the injector components but it probably aint so good for the exhuast components. Show me a used chainsaw engine that doesn't have greasy gum deposits around the exhuast ports or in the mufflor. Now to the amount of gum deposits it would produce in a diesel engine i don't if it would matter so much. You could maybe use a cleaner such as injector cleaner to solve this gumming issue but i don't think it would do much cleaning effect on the exhuast components after it was burnt in the cylinder. If you want to use a fuel additive to replace the lost lubricants in todays ULSD i would just use a diesel injector lubricant. Something that was designed for lubricating injection systems in diesel engines. I wouldn't want to worry about what 2 stroke oil does to my exhuast components. it's like dumping a bottle of orange crush in someone's fuel tank. A good way to put thier car out of commision. Just my 2 sense. I'm open for dispute.
2004 Dodge 2500 SLT quad cab 4x4 automatic, 5.9L 24V Cummins, 196,000k on it. Short box Burgandy, bone stock
Last edited by ChrBro; 12-06-2009 at 05:06 AM.