50 to 1 fuel mix chart gallons: 2 cycle oil mix

Like any other engine type, two-cycle engines run on a mixture of gasoline and oil and are designed to run on a specific ratio. It is also known as a Petroil, a total-loss lubrication system.

And the best 2-cycle oil mix is a specific type designed for two-stroke motor engines. Because the two-stroke engine employs crankcase compression as part of the induction tract, it is necessary for engine lubrication and combustion.

Here’s a quick overlook of the products we recommend. Scroll down below to find the 50 to 1 fuel mix gallons chart that we’ve included for your 2-cycle oil requiring machines!

Product name
Best for infrequent use
Echo 6450001 Power Blend
Best value
Pennzoil Marine XLF
Best bulk & convenience
Echo Oil
Echo 6450001 Power Blend 1 Gallon Oil Mix (50:1) 6 Pack
Pennzoil Marine XLF Engine Oil, 1 Gallon - Pack of 1
48PK Echo Oil 2.6 oz Bottles 2 Stroke Cycle Mix for 1 Gallon - Power Blend 6450001
What we love
Great option to avoid having to measure out
Amazing, high quality option
Easy, convenient & bulk
Best for infrequent use
Product name
Echo 6450001 Power Blend
Echo 6450001 Power Blend 1 Gallon Oil Mix (50:1) 6 Pack
What we love
Great option to avoid having to measure out
Best value
Product name
Pennzoil Marine XLF
Pennzoil Marine XLF Engine Oil, 1 Gallon - Pack of 1
What we love
Amazing, high quality option
Best bulk & convenience
Product name
Echo Oil
48PK Echo Oil 2.6 oz Bottles 2 Stroke Cycle Mix for 1 Gallon - Power Blend 6450001
What we love
Easy, convenient & bulk

The oil-derived substance, which can be petrol, castor oil, partial chemical synthesis, or synthetic, is combined with gasoline at a specified ratio spanning from 16:1 to 100:1. The first value stands for the gas and the second value is for the oil.

To minimize excessive emissions and waste accumulation in spark plugs, modern two-stroke small engines like those used in trimmers and chainsaws require the use of synthetic products. Synthetic is safe to use, but it must be used in the precise ratios recommended for the engine because it is meant for higher temperatures and pressures.

A 2-stroke mix has a lower ash concentration than ordinary two-stroke lubricating oil, which is excellent for reducing carbon deposits caused by the high ash content. Furthermore, if not utilized, a non-two-cycle mix with gasoline can become gluey in as little time as a few days. Here’s everything you need to know about 50 to 1 fuel mix, as well as a gallons chart to get the right 2-cycle product!

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When should you use this product?

wood being cut with a chainsaw

Many kinds of garden equipment, such as chainsaws and hedge trimmers, use a two-stroke engine that requires this special type of product, including its lubricating features. 2-cycle engines, which have a single fill port, must have a specific recipe to work. The resulting product is put into the fuel tank to aid engine combustion and lubrication. The use of just gasoline in a two-stroke engine might result in engine failure.

First, identify the manufacturing date of your equipment, which is generally near the model number or in the operator’s manual. The mixture has a ratio that specifies the proportions of each of the two components.

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A 32:1 ratio is required for most 2-cycle handheld devices developed before 2003. 1-gallon fuel + 4 ounces 2-cycle engine oil. After 2002 units, 2-cycle handheld equipment uses a 40:1 or 50:1 ratio. 1-gallon fuel + 3.2 ounces oil. If you are unsure of the age of the equipment, use a 40:1 or 50:1 ratio mix. A 40:1 engine oil can be used in all 2-cycle units.

Identifying the right ratio: 2-cycle vs 4-cycle engine

Identifying the number of fuel tanks and/or oil sump fill ports is the simplest method to tell whether you have a 2-cycle or 4-cycle engine.

2-Cycle  4-Cycle
2-cycle engines have one fill port. 4-cycle engines have 2 fill ports
The fill port caps of 2-cycle engines will feature a fuel sump and a can icon indicating the mix ratio. The fill port caps on 4-cycle engines will tell apart the tank from the oil sump. The fuel cap will include a gas pump icon, while the cap will feature a drop icon.

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The following are the common mistakes in filling the tank on a 2-cycle engine one must avoid, includes;

  • Operating the engine only on gasoline.
  • Pouring just oil into the tank.
  • Failure to pre-mix the ingredients before filling the tank.

To reduce emissions and avoid future gumming, use a low smoke product with a stabilizer. Most 2-cycle products include an easy-to-mix, ashless formulation that prevents carbon deposits in the exhaust system.

The most common ratios are 50:1 and 40:1, which imply 50 parts gasoline to one part oil when mixed. 40:1 is the name of a different ratio. As per the name, it contains 40 parts gasoline to one part oil.

Simply stated, the lower the ratio value, the more oil per volume of gasoline is present. To a one-gallon gas can, add 2.6 ounces for a 50:1 fuel mix and 3.2 ounces for a 40:1. Be sure to stir it well before filling up the tank.

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You may refer to the handy chart below to make sure that you are using the correct ratio required, including making sure what it is that your engine needs:

Based on the US Metric

60:1 2.1 16.7 1.6%
55:1 2.3 18.2 1.8%
50:1 2.6 20 2.0%
45:1 2.8 22.2 2.2%
40:1 3.2 25 2.4%
37:1 3.5 27 2.6%
35:1 3.7 28.6 2.8%
32:1 4 31.3 3.0%
30:1 4.3 33.3 3.2%
25:1 5.1 40 3.8%
20:1 6.4 50 4.8%
16:1 8 62.5 5.9%

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Ratio for chainsaws

A 50:1 ratio is the standard for a 2-stroke chainsaw combustion engine; however, other manufacturers suggest a 40:1 ratio for their models. After filling the engine tank with the mixture, shake it actively after being idle for a bit to thoroughly disperse the oil into the gas.

man cutting down tree

Outboard motors

50:1 is the usual mix for outboard motors. Most portable outboard motors have 5 to 6-gallon tanks.

Here’s the fuel mixture chart for the 50:1 ratio
Gas, in gallon Oil, in ounces
6 gallons 15.4 oz
5 gallons 12.8 oz
4 gallons 10.2 oz
3 gallons 7.7 oz
2 gallons 5.1 oz
1 gallon 2.6 oz

Mixture ratio for the typical garden equipment (ex. Echo SRM 225 weed trimmer):

Weed trimmers use a 40:1 fuel-to-gas ratio, which is generally 3.2 oz oil to gas (1 gallon), if that is the amount you are trying to get out of it, although the above chart will give you the best measure for different amounts. Because it will separate from gas over time, shake it well before refilling.

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The fast and easy way to calculate the volume of each of the products

Example to figure out a 50:1 mixture: Multiply the number of liters by 2 and add 0 at the end to get to milliliters.

For example; 5L X 2 = 10, and add 0 it becomes 100ml. So that gives you a 50:1 ratio if you mix 100ml to 5 liters of gas.

For a quick and exact calculation, there are accurate applications and software are readily accessible online, although the charts above should hopefully give you a good understanding of what you need.

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Can you use synthetic with regular oil?

chainsaw being used at local market

Yes, it is possible, but bear in mind that synthetic and regular oil are two distinct products, despite the fact that both are produced from petroleum. So the question is, what happens if you combine synthetic and regular products on a regular basis?

Experts say that combining different types on occasion, such as in an emergency, is OK. However, doing so routinely is not suggested since various other products may interact or be toppled by the mixture. Remember that all motor oils are a combination of base oils and additives.

Each kind is identifiable by nature. Synthetic additives are often of a higher grade than common additives. As a result, if you combine the two, the enhanced performance of synthetic products will diminish, and its benefits will be reduced as conventional oil interacts with it.

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Possible negative effects when you are unintentionally getting various products in together:

  • Unstable mixture and performance as a consequence
  • Lose the advantage of pricier synthetic options.
  • By nature, additives may not perform their function.
  • It does not harm the engine, but it degrades its performance.

How do you mix 2 stroke gas?

If you have two-cycle engine equipment, it runs on a mixture of oil and gas, as we have previously talked about. The majority of the ratios are based on a 1-gallon gas. Your equipment may include a single serving of the correct amount of motor oil per gallon, such as 40:1.

If unsure, just check the labels to determine the proper ratio for your equipment. If you cannot find it, make sure to contact the manufacturer so you’re only giving your tools what they need.

It’s pretty simple to combine the various components; start by putting the right amount into the gas can. Then pour in one gallon of fresh gas and stir it around. Take note:

  1. Do not attempt to mix the various components in the equipment’s gas tank directly – it is bound to go horribly wrong, and you may just end up ruining your equipment in the process.
  2. For 30 days, use the 2-cycle combination.
  3. Add a stabilizer to extend its shelf life.

As a result, you may blend regular oil with gas in the same proportion as two-stroke. The primary goal is to maintain the lubricating quality supplied to the fuel, which assists in both engine combustion and lubrication. Running a 2-stroke engine on gas alone will cause it to fail.

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Should you use the pre-mixed stuff?

If you’re a man who prides himself on doing everything yourself, you may even be one to think that you should also be mixing these various product together. After all, how hard can it be? And while there is a lot of truth to the fact that you can do this process yourself, the real question is really whether or not you will want to go through the process.

You’ll be dealing with some very greasy materials, and some that will take some serious cleaning to remedy if you suddenly find yourself either getting it all over the place or getting the ratios incorrect, at which point the finished product may no longer be suitable for the intended purpose. There are ready-made products out there that will take a lot of the hassle out of the task for you, and they’ll come at a very affordable price as well.

While it may seem like the pricier route, you’ll save money by not having to replace your power tools, whether it’s when you’re using a lawn tractor that requires it, or another tool at home. With these ready-to-use products, you’ll get machinery that starts when you need it, as well as having the product readily available in convenient containers, rather than having to combine it together every single time you’re having to use it.

It’s also a great option for storage, as you can simply get the amount that you need, rather than having to fill up your garage with lots of products that you already don’t have space for. Between possibly having an engine driven welder, a plasma cutter, and a tri fuel generator, additional storage space may be a high-priced commodity that you can’t simply take for granted.

If you’re still wanting to start do all the work yourself, we have features some great features towards the beginning of this article. However, if you’re looking for something that is ready, something that will make sure you don’t accidentally stain that beautiful garage floor, then you can simply head over to Amazon where you’ll be able to find a range of products by various manufacturers such as Husqvarna and Arnold Corp, both with impeccable reviews.

No matter if you’re buying some that is already mixed, or you’re doing the work yourself in your garage, you will want to make sure that you’re following the manufacturer’s recommendations. Yes, there’s a difference between 40:1 and 50:1, as the proportion of lubricating liquid is higher in a 40:1 product than it is in the alternative.

The good thing about going to a place like Amazon is that you can set up automatic purchases, so the pre-mixed product shows up in front of your door every three months. That way you’re not caught off guard when you are suddenly having to use a chainsaw to remove a tree stump in the backyard, as you will already have all the fuel available that you’d need.

If you aren’t adding the correct ingredients to your masterpiece, you also risk sitting with a lot of it in storage that may just become unusable before you intend on working in your garden the next time.

carpenter using chainsaw


A 2-cycle oil mix is required for lubrication and combustion in equipment powered by a 2-cycle engine, as per the manufacturer’s instructions. And, with the proper ratio, your equipment’s engine finally unlocks its maximum performance.

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