Motorcycle Oil Mixture

Mixture oil is a type of engine oil designed to be mixed directly with gasoline in 2-stroke motorcycles. Two-stroke motorcycles don't have a separate lubrication system like 4-stroke motorcycles, so the oil must be mixed with the fuel to lubricate the engine. Choosing the right mixture oil is crucial to ensuring engine performance and longevity.

1. Function of Mixture Oil

• Engine Lubrication : The mixture oil is responsible for lubricating the moving parts of the 2-stroke engine, such as the pistons and valves, reducing friction and preventing wear.
• Engine Cooling : It also helps reduce the heat generated by the engine, as 2-stroke engines tend to overheat more easily than 4-stroke engines.
• Corrosion Protection : The oil prevents rust and corrosion of internal engine parts by protecting metal surfaces from moisture and combustion residues.

2. Types of Oil for Blending

Blending oils can be divided into several categories based on quality, formulation type, and intended use:

• Mineral oil : This is the cheapest and least refined base oil, suitable for older 2-stroke motorcycles or for light use. It is less stable than synthetic oils and tends to produce more smoke and carbon residue.
• Synthetic oil : This is a more refined oil that offers superior performance. It has a greater ability to withstand high temperatures, reduces smoke and residue formation, and ensures more efficient lubrication. Synthetic oils are generally recommended for modern motorcycles or those seeking high performance.
• Semi-synthetic oil : This is a combination of mineral and synthetic oil, offering a good balance between performance and cost. These oils are suitable for most modern 2-stroke motorcycles, offering good protection without breaking the bank.

3. Oil Mixture and Viscosity

The viscosity of blended oil affects its ability to flow and lubricate properly, depending on engine temperature. Blended oil viscosity is typically designated with numbers like 10W-30 or 20W-50 , which refer to the oil's fluidity at low and high temperatures.

• Low viscosity oil (10W) : Suitable for engines that run in colder conditions or for motorcycles that are used primarily in colder environments.
• High viscosity oil (20W or 30W) : Suitable for engines that operate at high temperatures, such as those of sports bikes or motocross bikes.

In general, it is important to follow the motorcycle manufacturer's recommendations for the correct viscosity.

4. Mixing and Ratio

Mixing oil with gasoline must be done carefully, as the amount of oil affects the performance and reliability of the engine. The ratio of oil to fuel is commonly expressed as the "mixture ratio."

• Common ratio : The most common mixture is 1:50 , which means 1 part oil to 50 parts gasoline (2%). This is the typical ratio for many modern street motorcycles and scooters.
• Other ratios : Some engines, especially older or racing ones, may require a different ratio, such as 1:32 or 1:25 . These ratios require more oil to ensure better lubrication.

It's essential to follow the correct ratio indicated in your motorcycle's manual. Too much oil can cause smoke and carbon deposits, while too little oil can lead to premature engine wear.

5. Benefits of Blending Oil

• Optimal Performance : Using a good quality oil allows your 2-stroke engine to run at its best, with less friction, less heat generation and greater efficiency.
• Cleanliness and less smoke : Synthetic and semi-synthetic oils tend to produce less smoke and deposits, improving aesthetics and reducing pollution.
• Advanced Protection : A good oil provides excellent protection against engine wear, corrosion and overheating.

6. Tips for Choosing the right blending oil

• Consult the manufacturer's manual : The first thing to do when choosing the right oil for your motorcycle is to consult the manufacturer's specifications. The manual will indicate the recommended oil type and the ideal mixture ratio.
• Choose a high-quality oil : If your motorcycle is a new generation or if you do a lot of sporting activity, it is preferable to choose a synthetic or semi-synthetic oil to obtain the best performance.
• Look for certifications : Some blending oils have certifications such as JASO FC or FD , which guarantee high quality standards, minimizing the production of smoke and carbon residues.