Most four-stroke engines require fresh unleaded gasoline with an octane rating of 87 or higher. You can use gas with ethanol, but more than 10 percent ethanol is typically not recommended. Mowers with two-stroke engines use that same type of gas, but with the addition of a high-quality two-cycle engine oil.
What type of fuel do lawn mowers use?
Most lawn mowers found in hardware stores use four-stroke engines. This kind of engine needs fresh unleaded gasoline. Make sure to get gasoline with an octane rating of 87 or more. Owners may use gasoline with ethanol.
Can you use regular gas in a lawn mower?
The best gas to use for your lawn mower is the one required by its manufacturer. The rule of thumb, however, is that any octane gas at a gas station is okay for your lawn mower. You can use either regular gas rated at 87 octanes or premium gas that’s rated higher at 91 or 93.
What fuel does a petrol lawn mower use?
Fuel for your lawn mower or outdoor power equipment must meet these requirements: Clean, fresh, unleaded. A minimum of 87 octane/87 AKI (91 RON); If operating at high altitude, see below. Gasoline with up to 10% ethanol (gasohol) or up to 15% MTBE (methyl tertiary butyl ether), is acceptable.
Should you use premium gas in a lawn mower?
Premium gas, such as 93 octane, helps high-powered cars run smoothly and efficiently. … There’s no need to run a small lawnmower engine on high-octane gas, but it won’t hurt your lawnmower, either. The only harm might be the dent left in your wallet from using the more expensive fuel.
Can I put 93 octane in my lawn mower?
Typically lawn mowers can run on lower grade gasoline, so premium grade gasoline might not even be necessary. On the other hand, higher grade gasoline provides less additives, which means your lawn mower’s engine will incur less build up as well.
What happens if you put mixed gas in a lawn mower?
If your lawnmower has a 4-stroke engine and uses mixed gas, it can cause the engine to choke, overheat, and cause the engine to smoke. In the case of a 4-stroke engine, it is best to drain and replace the mixed gas with the correct gas before starting it.
What happens if you put wrong gas in lawn mower?
If the wrong fuel was added to the tank, this will cause the mower to stop running, or in some cases, not run at all. … Locate the fuel line connection on the tank. This connection will be on the bottom of the tank. No mower will run without gasoline in the tank, so always check the fuel level before using the mower.
How do I know if my lawnmower is 2 or 4-stroke?
How to Identify a 2-Cycle Small Engine
- If the engine has a single fill port for both the engine oil and gas, you have a 2-cycle engine.
- If the engine has two fill ports, one for gas and another separate one for oil, you have a 4-cycle engine. Do NOT mix oil and gas in these engines.
Can I use 95 in my lawn mower?
Modern, bigger engines, such as in cars, can deal with the ethanol, but lawnmowers cannot, he says. … In some lawnmowers it might be best to use 95 fuel or higher. “We always want to encourage people to find out if you’re using the right petrol. For some types of engines you do have to be careful.