Use This Gas and Oil in Your Cub Cadet String Trimmer (2 Cycle & 4-Cycle)

The string trimmer’s efficiency is dependent on the type and freshness of the fuel you use. Always use clean, fresh fuel that is designed for your engine.

Modern string trimmers from Cub Cadet often include 2-cycle engines. Cub Cadet, though, has just introduced numerous models with 4-cycle engines, so you will start seeing more of them.

Avoid engine damage and other fuel-related problems by learning about the engine type of your Cub Cadet and using the appropriate gasoline.

Two-cycle engines found in Cub Cadet string trimmers call for a fuel/oil ratio of 40:1:

  • Utilize unleaded petrol with an octane value of 89 or above and no more than 10% ethanol.
  • Increase the amount of high-quality 2-cycle oil.
  • Prior to putting either gas or oil into the fuel tank, it is recommended that they be combined.

Separate fill ports can be found on Cub Cadet 4-cycle string trimmers:

  • There is only one fueling slot for unleaded gas with an octane value of 89 or above and no more than 10% ethanol.
  • Only one oil filler for SAE 30 engines.

Check your operator’s manual to find out what kind of engine your Cub Cadet string trimmer has. While refueling, do so in an open location away from anything flammable.

Cub Cadet String Trimmer

Before diagnosing, repairing, or operating, be sure you’ve read and understood all of the safety recommendations in the equipment’s operator’s manual.

If you don’t feel confident in your ability to perform the repair safely due to a lack of experience, training, or health, you should get some help from a specialist.

A Cub Cadet String Trimmer with Stale Gas

The correct fuel must be used, and it must be used up promptly. Having trouble starting or running your Cub Cadet string trimmer is most likely due to a lack of gas.

As early as 30 days after purchase, gas might start to degrade and become less effective. Ethanol, which is present in nearly all gasoline, is a moisture magnet.

The varnish and coatings that are left behind when water and ethanol are removed from gas are the root cause of corrosion and fuel limits.

Never use gas with an ethanol concentration of more than 10% due to the damage it can do.

Fuel stabilizers and new fuel should be used

Natural gas has a short shelf life, so once you buy it, you should use it within 30 days. If you want your gas to last a bit longer, try adding a gasoline stabilizer like Sea Foam Motor Treatment, which helps remove moisture from the fuel.

The consequences of stale fuel cannot be undone by fuel stabilizers. Stabilizers should be added to new gas.

String trimmers by Cub Cadet that run on ethanol-free fuel

To protect your Cub Cadet engine, go with a fuel that doesn’t include ethanol. These fuels are widely available at home improvement stores and on the internet.

Two-cycle engines, like the one offered by TruFuel, come with the fuel and oil already mixed at a 40:1 ratio. If you have a 4-cycle Cub Cadet string trimmer, you can find the fuel you need in convenient canisters.

These fuels can be kept on hand for easy access whenever they are required. These are, however, the priciest ways to power a trimmer.

Gas & Oil for a Two-Cycle Cub Cadet String Trimmer

Cub Cadet String Trimmer Runs on 2-Cycle Gas and Oil

The fuel tank of any 2-cycle Cub Cadet string trimmer must have 2-cycle premium oil added to it before gas is put inside. Do not make the rookie mistake of putting undiluted gas into your 2-cycle string trimmer.

The car’s engine will seize up and stop working if you do this. Reason being, gas reserves are getting low. The engine’s internal parts won’t be able to move smoothly without the oil that is added to the gas as a lubricant.

If you start your string trimmer after putting pure gas in it, you will probably need to get a new one. There is irreparable damage to the engine.

A 40:1 gas-to-oil ratio is recommended for your Cub Cadet 2-cycle string trimmer. In other words, the ratio is 40:1 (gas to oil) in this case. Check out the following graphic for a breakdown of possible combinations.

Use regular unleaded gas with an octane value of 89 or higher and no more than 10% ethanol for this blend. Put in some ISO-L-EGD and JASO M345 FD approved 2-cycle premium oil.

Blending gas and oil for a two-cycle string trimmer:

  • To get an idea of how much fuel mix to make, consult the table below.
  • Loosen the top of a legal gas container. Fill up a gas tank with unleaded fuel (at least 89 octane and no more than 10% ethanol).
  • Add the 2-cycle oil to the gas can according to the chart’s recommended ounces.
  • Take off the lid and put back on the cap.
  • It’s best to use a gentle shaking motion to combine the fuel and oil.
  • Put into the gas tank of the Cub Cadet string trimmer.

Two-cycle engine oils from reputable manufacturers like Briggs & Stratton and MTD are suitable for usage. A gallon of gas is required for every 3.2 ounce bottle.

Cub Cadet 2-Cycle Gas-Oil Blend

Blend of Gasoline and Oil1 Gal Gas2 Gal Gas2.5 Gal Gas
40:13.2 oz Oil6.4 oz Oil8.0 oz Oil

Pre-Mixed Non-Ethanol Fuel for 2-Cycle Engines

Using an ethanol-free gasoline blend is a wonderful way to lessen fuel-related issues and maximize engine longevity. This oil and fuel mixture is suitable for use in your Cub Cadet string trimmer and contains no ethanol.

A 40:1 premixed can of fuel is readily available at most home improvement stores and on the web.

Gas and Oil for 4-Cycle Cub Cadet String Trimmer

Filling up a 4-Cycle Cub Cadet String Trimmer with Gas

The market has been stocked with 2-cycle Cub Cadet string trimmers for quite some time, but now you can also get 4-cycle Troy-Bilt models. Because of the two distinct fuel and oil ports on these motors, blending the two is unnecessary.

Unleaded gasoline with an octane value of 89 or higher and 10% ethanol content or less is recommended for 4-cycle Cub Cadet string trimmers.

Add a fuel stabilizer, such as Sea Foam or STA-BIL, to your gas tank to prevent the gas from deteriorating too quickly and to prevent the buildup of moisture and gumminess in the fuel system.

Gasoline with a minimal amount of ethanol in it is fine to use, but it’s not the ideal choice.

If you own a Cub Cadet string trimmer, you should fill it up with ethanol-free fuel, which can be purchased in canisters at your local hardware store or online and dispensed from the fuel pump at some gas stations.

The price of gasoline without ethanol additives is higher than that of regular gas. If you don’t want to deal with the potential problems that can arise from putting old ethanol-based gas through a string trimmer, purchasing in canisters may be a smart alternative.

Oil for a Cub Cadet String Trimmer with a Four-Cycle Engine

Both the engine oil and the fuel are refilled through different ports on 4-cycle engines. With a 4-cycle motor, NEVER combine oil and fuel. You should never put 2-cycle oil in a 4-cycle string trimmer.

The engine’s moving parts can’t function without oil. Overheating due to excessive friction is a surefire way to render your string trimmer inoperable, if not completely useless.

While operating an air-cooled engine, Cub Cadet suggests using SAE 30 oil.

Viscosity of Engine Oil for a Cub Cadet 4 Cycle

ManufacturerEngine Oil
Cub CadetSAE 30

In Conclusion

Your Cub Cadet string trimmer’s performance can be affected by the fuel you use. Fuel deteriorates with age, leading to corrosion and fuel limitation. If you have a Cub Cadet string trimmer, here are the procedures to take when selecting a fuel:

  • Always fill up with new gas.
  • There shouldn’t be more than 10% ethanol in the gas.
  • Make sure you are familiar with your Cub Cadet’s engine type (2-cycle or 4-cycle).
  • For 2-cycle engines, combine gas and oil before putting it in the fuel tank.
  • Direct gas is used in 4-cycle engines. The engine oil can be refilled through a separate fill port.
  • A fuel stabilizer will prevent gas from deteriorating over time, extending its storage life. Before putting to the gas tank, combine with petrol.
  • Gas should be kept in a dry place, far from any sources of ignition, such as water or flammable materials.