NOT RECOMMENDED, but...
If you want to create a "disabled vehicle" smokescreen, inject a little Seafoam into the intake during the incident (by means of automatic solenoid and reservoir, etc.)
It will appear as if the engine has "thrown a rod" or is "pass-worthy". At the same time, you're cleaning the carbon from the internals. Of course, use sparingly...
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“If we knew what we were doing, it wouldn't be called research” ― Albert Einstein
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