What Is 4-Mix Fuel

Unlike other four-strokes, the 4-MIX engine runs on a standard petrol-oil mix (1:50). A completely new feature is that the petrol-oil mix is distributed through the engine via a bypass channel in the cylinder head for complete lubrication.

What is a 4-mix engine?

Ultimately STIHL 4-MIX combines all the advantages of two different engine principles: two-stroke and four-stroke. … It is the amount of movement of the piston before combustion that determines if it is a four-stroke (2 up, 2 down movements) or two-stroke (1 up, 1 down).

How do you mix STIHL 4-mix?

Using the right type of fuel is critical in the safe and efficient operation of your STIHL equipment. All STIHL gasoline-powered equipment runs on a 50:1 mixture of gasoline and 2-cycle engine oil.