Weed eaters operate very similarly to lawnmowers and snowblowers, which may have you wondering if weed eaters need oil. Knowing the answer to this can greatly affect the lifetime of your weed eater and not to mention the quality of it. So, does a weed eater need oil to function properly?
Fuel-powered weed eaters need oil to operate well and continuously. Weed eater engines need motor oil to lubricate the engine to keep it clean and keep it from overheating. Some engines use mixed fuel and oil, and others cycle the oil separately.
There are many options for motor oil, so it’s challenging to figure out what is best.
In this article, we will walk you through finding out what type of oil you need and what you can add to your oil and fuel that makes a big difference! Let’s get started!
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Here’s a Quick Pro Tip!
After you figure out if you have a two-cycle or four-cycle engine, you can find the best motor oil, fuel, and additives. Remember, If you have a two-cycle engine, ask the manufacturer or retailer what ratio of oil to gas it uses. It will either be 50:1 or 40:1.
Here are motor oils for three well-reviewed different motor types you may want to check out next time you need oil for your week eater:
1. Briggs & Stratton 2-Cycle Motor Oil: This motor oil measures the amount you need for a two-cycle engine and contains a fuel stabilizer. You can use it for mixing a 40:1 ratio or a 50:1 ratio.
2. STP Premium Small Engine 4-Cycle Oil: This is made specifically for small engines like lawnmowers and weed eaters. It is a synthetic oil that will last all year and make start-up easy anytime.
3. STA-BIL Full Synthetic 2-Cycle Oil: This synthetic oil works well for two-cycle engines. It is 2.6 fl oz and treats one gallon of fuel. It also is a stabilizer so that the oil and fuel will last an entire year.
Weed Eaters and Oil
Weed eaters that run on fuel need oil, but the type of oil you need will depend on the type of weed eater engine you have.
In this section, we will go over the different types of oil for the different weed eaters. So, let’s begin!
What Oil Do Weed Eaters Use?
Many weed eaters are two-stroke engines and use mixed oil and gas. However, some weed eater engines use regular gas and oil separately. Therefore, it’s best to check the user manual to see if it needs mixed gas and, if it does, what the ratio of gas to oil it needs.
Most two-stroke engines use either 50:1 or 40:1. The one part is the oil, and the 50 or 40 is the gas. Additionally, other weed eaters do not use oil at all.
Some run on batteries alone or run on electricity. Electric and battery-powered weed eaters are better for light to moderate work.
Will it Ruin the Engine of a Weed Eater to Run it Without Oil?
Unless your weed eater is electric or battery-powered, it needs gas and oil to work correctly. If it only has gas, then the engine will swiftly stop working because the oil lubricates the engine parts, so the parts will not grind and overheat.
When you use combustible machines like lawnmowers or weed eaters, you risk starting fires – especially when you do not use the machine properly.
Running the weed eater without oil is one way that misuse can lead to starting a fire.
Can You Use Just Gas in a Weed Eater?
You should not only use gas in a weed eater. A fuel-powered weed eater needs oil. You will need an oil and gas mix if the engine is a two-cycle engine. You will put the oil in a separate compartment if it is a four-cycle engine.
To determine if your weed eater is a two-cycle or a four-cycle engine, simply check the user manual. You can search for the brand and model online if you do not have a print copy.
Additionally, the manual will tell you what ratio of mixed fuel you need if it is a two-cycle engine.
Do Weed Eaters Need Oil?
A fuel-powered weed eater needs oil. The oil prevents the engine parts from grinding and overheating. However, some weed eaters have electric and battery-powered engines that do not need oil.
It is also suggested that you lubricate the blades with oil on nearly all weed eaters. You can apply the oil with a rag, brush, or a small drip bottle.
Synthetic oil works well. However, using a lubricant is not necessary on plastic blades.
Can I Run a Weed Eater Without Any Oil?
Fuel-powered engines in a weed eater need oil. If the weed eater is a two-cylinder engine, the oil and gas must be mixed with either a 50:1 ratio or a 40:1 ratio. If the engine is a four-cycle, then the oil will be separate.
Whether you use mixed fuel or not, adding a fuel stabilizer is also good to keep the fuel fresh. You do not want to use regular gas after it has been sitting in the weed eater for more than three months.
The stabilizer will extend the life to two years in some cases.
Looking at the shelves in the store at all the motor oil options without knowing what you are looking for is overwhelming! In this section, we will go over exactly what type of oil you should be looking for. Let’s motor on!
What Kind of Oil Does a Four-Cycle Weed Eater Need?
Regular motor oil is acceptable to use in a four-cycle weed eater. You can also use synthetic oil or add synthetic oil to your regular crude oil to extend the life of your oil. Additionally, you should not mix the oil with the fuel in a four-cycle weed eater.
You can also use regular gas for most fuel-powered weed eaters. However, you can check with the manufacturer to know for sure which fuel type is best for the engine.
Also, you can add a fuel stabilizer to keep gas fresh and ready for storage during the off-season.
What Kind of Oil Does a Two-Cycle Weed Eater Use?
A two-cycle weed eater uses mixed fuel and oil. Most use a ratio of 50 part gas to one part oil, but some use 40 part gas to one part oil. Check the manual or the manufacturer to learn which ratio your weed eater needs.
If you’re unsure whether it is a two-cycle or a four-cycle engine, you can check the weed eater to see if there is a place just for the oil. You do not mix the oil with the gas in a four-cycle engine.
What Kind of Oil Do I Need for My Weed Eater?
You can use a different crude or synthetic motor oil if your weed eater is a four-cycle engine. If you have a two-cycle weed eater, you must mix your oil in with the gas or buy premixed fuel.
If you have a two-cycle engine, you will need to check the user manual or the manufacturer to see if the engine uses an oil-to-gas ratio of 50:1 or 40:1.
Retailers specializing in lawn care products should also know what the best ratio is for your weed eater.
What Kind of Oil Should be Used in a Weed Whacker?
In a two-cycle weed eater, you should mix the oil with the gas, and you can buy mixed gas based on the ratio mix you need. In a four-cycle weed eater, you will put the oil in a separate tank, and you can use regular crude oil or synthetic oil.
Synthetic oil lasts a little longer than crude oil because it is smoother and can lubricate the engine parts longer.
Additionally, if you are using mixed fuel, you can add a stabilizer to the mix, which will lengthen the oil and gas life.
Oil and Gas
Some weed eaters use mixed oil and gas, and others do not. In this section, we will go over the different mixes and whether or not you should mix your fuel. Let’s continue!
How Do I Mix Gas and Oil for My Weed Whacker?
To mix the gas and oil in a two-cycle engine, pour one part of the oil in first and then follow with 40 or 50-part gas. Contact your weed eaters manufacturer or retailer for the fuel mixture ratio.
You can also purchase premixed fuel and not worry about measuring the correct amount of oil to gas. The oil mixture will let you know if it is 40:1 or 50:1.
Some mixed fuels will also contain a fuel stabilizer, which lengthens the life of the fuel.
What is the Gas to Oil Ratio for a Weed Whacker?
Two-cycle weed eaters use mixed gas, some use 50:1, and some use 40:1. The oil is always the one part. Ask the manufacturer company to know which is best for your weed eater. Retailers who sell the product are likely to know that as well.
You will also need to ensure your weed eater’s engine is not a four-cycle engine because it will need to cycle the oil separately from the fuel.
Also, battery-powered and electric motors do not use gas or oil.
Recommended gas-to-oil ratios for popular weed eater brands include:
|Manufacturer||Gas to Oil Ratios|
|Craftsman||32:1 up to a 40:1|
How to Mix Two-Stroke Fuel for Weed Eaters?
You can measure out the oil first and pour it into the fuel tank, then add the gas, and the gas will mix with the oil. You can also purchase premixed fuel at the ratio needed for your weed eater. Most weed eaters use 50:1 or 40:1.
Check with your weed eater’s manufacturer or retailer to determine whether it uses a 50:1 or 40:1 ratio.
You can also check the user manual; if you do not have a paper copy, you can look up the make and model online.
What Kind of Oil Do I Mix with Gas for a Weed Eater?
You can mix regular motor oil with gas, synthetic oil, or oil processed for small motors. However, synthetic oil with a fuel stabilizer is best for small motors because it will last all year long without needing to be changed.
You can also buy the fuel and motor oil already mixed for small engines. Moreover, some mixed fuel also comes mixed with fuel stabilizers, especially for small engines.
However, before you buy premixed fuel, you will need to know the ratio of gas to oil. Most small engines are either 40:1 or 50:1
How Do You Mix Gas and Oil for a Weed Eater?
You can either buy mixed fuel that contains the necessary ratio of gas to oil or measure it yourself and simply pour the oil in first. Additionally, add fuel stabilizer to lengthen the life of both the oil and the gas.
If you are unsure whether your weed eater is a two-cycle engine and needs mixed gas or what ratio mix is needed – consult your weed eater’s user manual.
You can also call the manufacturer company or ask a retailer that is familiar with your weed eater’s make and model.
If you already know your weed eater’s two-cycle engine, you know you need mixed gas. In this section, we only go over the best type of mixed gas for your machine and what else you can mix to prolong the life of the fuel.
What is the Ratio for Mixed Fuel For a Weed Eater?
Two common ratios of mixed gas are used for two-cycle weed eaters. One is 50:1, and the other is 40:1. These mixes are both one part oil. Check with the weed eater’s manufacturer for which ratio you should use.
You can also check your user manual either online or the print copy that came with your purchase to find out the ratio of fuel it uses.
You can also ask a retailer who sells the make and model of your weed eater.
Do Weed Whackers use Mixed Gas?
Two-cycle weed eaters use mixed gas, but four-cycle weed eaters do not. Not all two-cycle weed eaters use the same ratio of gas and oil either. Some use 40:1, and some 50:1. Check which fuel is best with the manufacturer or retailer.
If you decide to mix gas yourself, you can either measure the oil to gas out and pour the oil in first or purchase a bottle with measurements for you and can pre-mix the fuel for future use.
Do all Weed Whackers Take Mixed Gas?
Not all weed eaters take mixed gas. Only two-cycle engine weed eaters take mixed gas. Four-cycle engines, however, cycle the oil separately. Two-cycle engines either take a 40:1 or 50:1 ratio of gas to oil. So oil is always the one part.
You can add a fuel stabilizer in either a two-cycle or two-cycle motor. This will lengthen the life of your fuel up to at least a year. It will also keep it fresh when you store it for months during winter!
You might also enjoy our post on How to Kill Weeds Permanently
Can You Use Lawn Mower Oil in a Weed Eater?
Lawnmowers and weed eaters use the same type of fuel and oil. They can be two-cycle or four-cycle motors and use either mixed or regular fuel. Also, they do better with fuel stabilizers added to their fuel tank.
Storing a lawn mower or weed eater is the same as well. You can either fill the tank with stabilized fuel or remove it with a turkey baster and dispose of it properly.
Contact your local government for proper disposable standards.
What Happens if You Put Straight Gas in a Weed Whacker?
If you only put gas in a weed eater, it will overheat from the grinding machinery. This is because the engine needs oil to clean and lubricate it. However, if you are using oil, you can use regular gas. You don’t have to buy high-octane gas or gas without ethanol.
Instead, you must use mixed gas if your weed eater is a two-cycle engine. You can either mix regular gas with motor oil yourself or buy it pre-mixed.
We also suggest adding a fuel stabilizer to any fuel to lengthen the life of the fuel.
How Do You Put Oil in a Weed Eater?
In a two-cycle motor weed eater, you will mix the oil in with the gas. You can mix it in a gas can by shaking it, or you can pour the oil in first and then the gas. Make sure you have the correct ratio. Most two-cycle oil and treatment go with a gallon of gas.
Be sure to read the instructions on your two-cycle oil product and whether it is a 50:1 or a 40:1. Your weed eater manufacturer will know which ratio you need.
You can also ask a retailer that specializes in lawn care equipment.
I hope now the shelving lines in the motor oil section seem much less intimidating, and you know what oil is best for your weed eater and what you can add to your oil and fuel to make it last much longer!