On a two-stroke engine, however, the oil is "changed" more than 15 times a second -- and that's only at idle. When it is up and running at 10,000 rpm, oil is cycled through the two-stroke engine ...

Previously, Susesea’s engineers alternated between MAN Category I and Category II lubricants to manage this requirement, ...

Either way, two-stroke engines burn oil in more ways than one, and your wallet takes the brunt of the result. Two-stroke engines are less efficient. Hadynyah/Getty Images.

Mixing gasoline and oil for a two-stroke engine. Ilya / Adobe Stock. Perhaps the biggest trade-off when comparing 2 stroke vs 4 stroke outboards is that four strokes might be more durable, but two ...

As for lubrication, the fuel and air coming into a 2 stroke will contact all internal components of the engine. Because of this, you need to mix oil (the lubricant) with fuel before putting it in ...

As it turns out, you can indeed build a two-stroke engine from scratch, ... With a 40:1 fuel/oil mixture the little engine idles and runs as well as a two-stroke can, ...

That said, these Austrian two-stroke machines aren’t fuel-injected in the same way as your car. Under the hood, most modern engines feature direct injection, where fuel is squirted directly into ...

By design, the six-stroke engine of Porsche's dreams would use a novel operation; the automaker says the process is "six individual strokes that can be divided into two three-stroke sequences." ...

Two-stroke engines are generally more powerful for their package size and more thermodynamically efficient than four-stroke engines. ... It's not a 2-stroke; and doesn't use oil in fuel lubrication.

Oil and petrol are miscible. Your 1:50 boat mix is lean in oil. ... Other two-stroke engines like strimmers, chainsaws and lawnmowers run on mixes between 1:20 and 1:30.