What is the STIHL 4-MIX?

The STIHL 4-MIX engine thus combines the advantages of a 2-stroke and a 4-stroke. As well has having plenty of lugging power and perceptibly higher torque, the 4-MIX engine is also convincing in terms of lower emissions, low maintenance and a pleasant sound.

Table of Contents

Which Stihl trimmers are 4-stroke?

HERE ARE SOME STIHL OUTDOOR POWER TOOLS THAT CONTAIN THE STIHL 4-MIX™ TECHNOLOGY: FS 91 / FS 91 R. FS 111 / FS 111 R / FS 111 RX. FS 131 / FS 131 R.

Is Stihl FS 91 A 4-stroke?

It also bears mentioning that, while the Stihl FS 91 R does feature a 4-stroke engine, it still requires premix fuel.

Is the STIHL FS 131 4-stroke?

The Stihl FS 131 R brush cutter features the STIHL 4-MIX engine, which is our first four stroke engine which works on a mixture of petrol and oil. It combines the advantages of four-stroke and two-stroke engines in one.

Are 4-stroke trimmers any good?

A 4-stroke string trimmer produces far fewer emissions, impacting the environment less and improving fuel efficiency. In fact, in some states, you might have to use a cleaner-running 4-stroke trimmer due to emissions regulations.

Does STIHL make 4 cycle fuel?

A premium ethanol-free, high-octane fuel formulated for ultimate 4-cycle engine performance. STIHL Moto4™ utilizes an ethanol-free formula, allowing the fuel to stay fresh longer — up to two years after the container is opened — than alternative fuel options containing ethanol.

What fuel do you put in a 4-stroke engine?

Gasoline with up to 10% ethanol (gasohol) or up to 15% MTBE (methyl tertiary butyl ether), is acceptable.

What is the difference between Stihl FS 90 and FS 91?

Demanding landscapers can save time using the STIHL FS 91 R professional trimmer. With its larger fuel tank than the FS 90 R, this model provides 30% longer run times, as well as a three-step start procedure to get to work faster.

What fuel does a Stihl FS 91 R use?

Gasoline
SPECIFICATIONS

Engine Displacement	:	28.4 cc
Fuel Tank Capacity	:	24 oz
Fuel Type	:	Gasoline
Handle Type	:	Looped
Shaft Type	:	Straight