Small Engine Fuel: The Test Results

per the MSDS, a complex combination of hydrocarbons (99.9%) plus less than 0.02% motor fuel anti-knock compound; the narrator separately notes it contains about 9% oil. The specific bottle tested is a 30% mix; the narrator notes other strengths exist too, maybe 15 or 20 percent or even stronger versions

Celsius (71.6 degrees Fahrenheit) per the MSDS

less than 1,137 mmHg per the MSDS

the small lawnmower engine would not run on the RC racing fuel alone without help; the narrator had to build a makeshift choke to force enough fuel into the engine to get it started

did not run on fuel vapor alone; consistent with the MSDS note that this fuel does not vaporize easily, unlike gasoline

RC racing fuel and 50% gasoline (gasoline added because it is very volatile and vaporizes quickly)

once running on the 50/50 mix, the engine ran really well; the narrator measured performance qualitatively using the engine's brake/flywheel drag mechanism (no horsepower measuring equipment available)

a lot of visible smoke during operation, but the narrator observed very little buildup inside the engine afterward, which he attributes to the RC fuel's 9% oil content acting as a lubricant