Search This Site

Search With Google

How To Mix 2 Stroke Oil And Fuel


Moisture Meter. Wood Moisture Meter. Concrete Moisture Meter. Building Moisture Meter. Garden Moisture Meter. Humidifier. Privacy Policy.

The 2 stroke engine on the petrol strimmer is lubricated by it’s own fuel system. This means that you need to mix in special 2 stroke engine oil with the petrol you use to power your petrol strimmer. This is necessary to prevent any damage to the 2 stroke engine. If you do not mix oil with the petrol the petrol strimmer will overheat and seize or break. If you run the petrol strimmer with an incorrect ratio mix of oil and fuel you run the risk of actually destroying your strimmer within minutes of operation.

So knowing the mixing steps, mixing ratios and petrol storage procedures are of great importance when it comes to owning and running a petrol strimmer. The mixing of oil with fuel is just one maintenance task of the petrol strimmer but it is a task of great importance and if not carried out correctly can have dire consequences to your machine.


Storing Gasoline


There is a big difference between new gasoline and fresh gasoline. If you go and fill your gas canister and seal it properly it can easily be mistaken for new fuel when you come to use it. It is easy to see why this scenario occurs but the thing is one needs to know just how long the fuel has been sitting in the canister for. The thing with gasoline is that it actually expires and has a life expectancy of between 3 and 6 months. Any longer than this and the gasoline will become unhealthy to use in an engine like that on the petrol strimmer.

What happens with gasoline over time is that it tends to break down and lose it’s potency regarding it’s combustible properties. This is not good news for the petrol strimmer. By using old gasoline you are running the risk of reducing engine power and even worse, creating excessive build up of impurities in the engine parts which only lead to destruction of the engine.

So be aware of the fact that gasoline has a shelf life. When you buy new gasoline a good tip is to always write the date you purchased it on, on the outside of the canister. This way you are sure to never use old gasoline again.


Some tips for storing gasoline


Always throw out gasoline that has been stored for over 3 months. A good rule to follow is to throw away any gasoline that has been stored when the new gardening season begins. Start the season with newly bought gasoline.


If you ever store your petrol strimmer with fuel inside it always use a fuel stabilizer to protect the carburetor.


Even if you do use a stabilizer with the petrol strimmer you should always throw away the gasoline at the beginning of the season.


When storing fuel for long periods of time always use a stabilizer. It can add a couple of months life to the fuel, but no more.


Mixing Ratios


2 stroke engines are not universal and each specific engine has it’s own particular oil and fuel mixture ratio. So when it comes to mixing your own fuel and oil you need to know the correct ratio for your particular petrol strimmer. You will have a handbook with your strimmer and the mixing ratio should be inside it. If you can’t find it then check the engine housing of your strimmer where the mixing ratio information may be.

Today the petrol strimmer is manufactured to have a 50/1 fuel to oil mix. This is because the engines are cleaner running and more environmentally friendly. Previously the older style of petrol strimmer had a mix ratio of 40/ or 32/1. If you have a new version of the petrol strimmer that uses a 50/1 ratio things are a lot more convenient for you. This is because the 2 stroke oil comes in bottles of 2.6 oz. This is the precise amount required to add to a gallon of fuel in a 50/1 ratio mix. So if your petrol strimmer works on a 40/1 or 32/1 mixing ration you have some additional measuring to do when it comes to determining the correct amount of oil to add to the gasoline. It is easier to measure larger amounts of gasoline than small amounts of oil so we shall help you along and give the amounts for a correct mixing ratio.


50/1 Mixing


2.6 ounces oil

1 gallon of fuel


40/1 Mixing


2.6 ounces oil

0.8 gallon gas


32/1 Mixing


2.6 ounces oil

                                           0.65 gallon fuel



How To Mix Oil/Fuel For The Petrol Strimmer



In order to mix oil and fuel correctly, the oil must be mixed with the gasoline in a separate container. You should never mix the 2 together in the actual fuel tank of the petrol strimmer.


Steps for mixing:


Always add the oil to the container first. Make sure that you have the correct amount of oil and that the container is clean.


Next add the correct amount of fuel to the container with the oil in.


Seal the container properly and then swirl around the container gently until the oil and fuel is properly mixed. Do not shake the container to carry out the mixing process.



Engine Damage And Oil



When you mix the oil and fuel for your petrol strimmer it is imperative that you carry out the correct mixing ratio. If you don’t then problems will occur with your petrol strimmer. Mixing too much to the fuel will cause less damage and problems than mixing too little oil. With just a little too much oil in the mix you may not even notice any difference in your strimmer’s performance and at least the tool is being lubricated.

If you add a lot of extra oil to the mix your strimmer will suffer symptoms:


Smoke coming from the exhaust


Oil coming out of the muffler


A significant loss of engine power


Rectifying these problems is simple enough to do. Just empty the fuel tank and refill it with properly mixed fuel.


If you add too little oil to the fuel mix this can have serious consequences for your petrol strimmer. And if you run a petrol strimmer without any oil at all you will see your engine destroyed in just a couple of minutes. The piston and cylinder will overheat and seize and break. Galling is where the piston and cylinder will become distorted in shape due to excess heat.


The most prominent sign of a petrol strimmer running on a fuel mix with too little oil is that of a loss of power. You need to act quickly and rectify the problem immediately or permanent damage will be caused.



Always ensure that you mix the oil and fuel to the correct mixing ratio for a fruitful working life with your petrol strimmer.



Moisture Meter Guide 2010                                                                                               Contact

The complete moisture meter website

Moisture Meter Guide



Wagner Moisture Meters

Wagner MMC220

Wagner MMI1100

Wagner MMC210

Wagner MMC205

Wagner L606

Wagner L607

Wagner C575

Wagner BI2200

Delmhorst Moisture Meter

Delmhorst BD-10 Pin

Delmhorst J-2000

Delmhorst J-Lite

Delmhorst P-2000

Delmhorst BD-2100

Delmhorst J-4

Delmhorst Accuscan

Delmhorst KS-D1

Delmhorst Dual Function

Tramex Moisture Meters

Tramex Encounter Plus

Tramex Compact Wood

Tramex Concrete Encounter

Tramex Skipper Plus

Tramex Roof And Wall

General Tools Moisture Meter

General Tools MMD4E Digital

General Tools MM1E Pin LED

General Tools MMD950

General Tools MMD5NP Pinless LCD

General Tools MMH800 4 In 1

General Tools GLMM200 Soil

General Tools MMD7003 Precision

General Tools MMD8P Multi Species

General Tools MMD7NP LCD

General Tools MM700D Precision

Sonin Moisture Meters

Sonin 50218 Digital

Sonin 50270 Digital

Sonin 50210 Test Tool

Sonin 50211 Test

Extech Moisture Meter

Extech MO280 Pinless

Extech MO230 Pocket

Extech MO257 Pinless

Extech MO260 Combi

Extech MO260 Pin/Pinless

Extech MO270 Wireless

Extech MO210 Pocket

Extech MO210 Pocket

Extech MO220 Wood

Extech 407777 Heavy Duty

Lignomat Moisture Meter

Lignomat Mini Ligno E/D

Lignomat Mini Ligno S/D

Lignomat LED Wood

Lignomat Mini Ligno E

Lignomat Mini Ligno DX/C

Lignomat Scanner D

Lignomat Ligno Duotec

Lignomat Mini Ligno S














Boat Moisture Meter








A moisture meter proves itself to be a useful tool when testing the moisture content levels of boat materials. When assessing a boat, care, judgement and experience should all be employed and then the moisture meter used as the last tool to give the final assessment. Boat moisture meter



Need A Chainsaw For Firewood?





The petrol chainsaw is used to fell trees, as well as for pruning and cutting overgrowth. Tree surgeons favour the petrol chainsaw and use it for cutting away branches and foliage. Cutting firewood


Orchid Moisture Meter






The orchid belongs to a widespread and very diverse family of flowering plants which have fragrant and colourful blooms. Orchids can be found in pretty much every habitat. Orchid moisture meter



Caravan Moisture Meter






Any caravan that is kept open to the elements all year round can become very susceptible to damp and damp related problems if proper precautions are not taken to prevent this. Caravan moisture meter


Garden Moisture Meter









The garden moisture meter helps any avid gardener to measure and monitor many different conditions to ensure that they can maintain healthy growing conditions for both indoor as well as outdoor plants. In order to have healthy thriving plants Soil moisture meter