Two Stroke Engines: I can no longer get Leaded or Lead Replacement petrol to use for my brush cutter. Can I use unleaded petrol or will this damage the engine?
You can use unleaded gas in your engine, it will not hurt it. The lead was added, in part, to raise the octane value of the gasoline, and octane values have not dropped with the removal of the lead. In North America, lead has been banned since 1986, and the reason was because of pollution laws, and to prevent the catalytic converters in vehicles from clogging up. I have never used leaded gasoline in any of the engines I have owned or worked on, and some of these engines were built in the 60’s and 70’s. The lead also acted as a lubricant but with today’s efficient two stoke and engine oils you don’t need this lubrication provided by the lead in gasoline. John Two Stroke Engines: I have two Stihl weed trimmers. I do not have the model number handy but here is my question. Since I mixed two gallons of fuel mix using a Poulan oil additive, both will not accelerate past half throttle. Do I have the mixture wrong?? Both will start easily as usual and do not excessively smoke but I can’t get
