What Types of Transmission Oil Does A 2-Stroke Dirt Bike Take and How To Change It

There are two primary types of transmission fluids, namely automatic transmission fluid and manual transmission fluid. Both types of transmission fluid have their unique properties.

Synthetic transmission fluid and other specialized fluids are required for and recommended for use in many current transmission designs, including continuously variable transmissions and dual-clutch gearboxes. It is essential to the well-being of your car that you are familiar with the kind of transmission you have and the fluid you should use in it. With that said, this article will discuss the types of transmission oil a 2-stroke dirt bike needs.

What type of transmission oil does a 2-stroke dirt bike use?

The older, simpler technology is a two-stroke, requiring two different kinds of oil to function. The gearbox, clutch, and bottom end bearings on your dirt bike all need special oil, and one option is DIRT BIKE GEARBOX OIL. An appropriate grade of wet-clutch motorcycle gearbox oil will have a viscosity rating of roughly 80w.

Because of the high-performance engine in motocross bikes, you should avoid using inexpensive oils or vehicle oil. Different TWO-STROKE OIL is mixed with the gasoline at a certain ratio to lubricate the piston, rings, and top end bearings of your two-stroke motor; this mixture is then consumed during combustion. A range of fuel/oil ratios is used in two-stroke racing motorcycles, from 20:1 to 50:1.

What is a dirt bike gearbox oil?

Regular maintenance is a must if you want your dirt bike’s engine to last as long as possible and run at a high level all year long. Each motorcycle model from KTM, Husqvarna, Yamaha, Honda, Kawasaki, and Suzuki has its recommended gearbox engine oil. Motorcycle gear oil might be mineral, synthetic, or semi-synthetic. If you want to know what kind of weight and oil viscosity are optimal for your dirt bike’s engine, you should read the owner’s manual.

What is two-stroke oil for dirt bikes?

If you want the most out of your 2-stroke dirt bike, you must get some high-quality premix oil and invest in it. Many beginning racers begin their careers on two-stroke dirt bikes, most frequently KTM minis. Two-stroke engines have been produced for a significantly more extended period of time than four-stroke engines.

Despite having fewer moving parts, two-stroke engines can deliver the same amount of power across a broader range. During a motocross or enduro competition, a dirt bike’s engine is subject to temperatures that can reach incomprehensibly high levels. Because of this, it is necessary to clean the engine and change the oil routinely.

How do you change a two-stroke dirt bike’s transmission oil?

The first and the critical task is the maintenance that should be performed on a regular basis on your two-stroke dirt bike is to change the oil. It won’t take a lot of your time, but you must do it correctly and properly, in a daily manner.

Step 1

Make sure the bike is clean before commencing any work you’re going on. You should get your motorcycle up to operating temperature before attempting to drain the oil, as this will help the process go more smoothly. Give it a shot, and after you’re finished, make sure that the engine is not on.

Step 2

Locate the oil cover of the motor while the bike is held upright, and remove it. Make every effort to avoid getting any dust or dirt into the gearbox.

Step 3

Unscrew the oil drain plug and pour the oil into a drain pan or bucket under the motorcycle. To get the most out of your bike, tilt it from each side.

Step 4

After clearing the drain, carefully replace the drain stopper, ensuring that there’s no cross-thread or its over-tighten. When it breaks, you should get rid of it and replace it.

Step 5

Fill the transmission with the appropriate amount of oil via the filler hole at the top. The amount needed can be found on the engine side beside the filler hole, but you can also check the handbook.

You may unscrew a “check bolt” on the side of your bike to inspect the range of the oil. In this case, the presence of oil is desirable. If there is no oil leaking out, you need to add some. Some motorcycles even have a window that lets you quickly check the oil level.

Step 6:

If you want to ensure that the cap seals well, clean it and ensure the screw is in good shape. Put a finger of pressure on the screw and reinstall it.

How often should you change the oil on your two-stroke dirt bike?

In general, many experts who are skilled in bikes advise that the oil in a bike should be changed around every 3,700 miles. However, this number is possible to vary depending on the kind of oil that was used during the most recent oil change.

On the other hand, it’s around every five hours for a bike with a two-stroke engine. Suppose you’re pushing yourself every three hours. If you go longer without changing the oil, just go with it but doing so will increase the gearbox’s wear.

What oil should be used on a two-stroke dirt bike?

You should only use engine oil for a high-quality two-stroke bike like Castrol, Motul, and more which are all excellent choices. They’re not inexpensive, but in comparison to cheaper oils, they’ll save you a lot of money in the long run.


Changing the oil in your motorcycle’s engine is crucial to keeping it running smoothly and reliably for as long as possible. Always use a high-quality filter whenever you change your oil to protect the internal components of your engine from wear and tear. Many varieties designed for usage in both four- and two-stroke dirt bikes are available today.

Some prefer synthetic oils because they may go longer without being changed. Others favor mineral-based oils because of their lower per-gallon prices. If the type you choose protects your engine compartment from wear and corrosion to the same degree as the original equipment, it is acceptable to use it.

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