Motorcycle Engine Oil Change: When and How to Change It?
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Motorcycle engine oil plays a crucial role – it lubricates moving engine parts, reduces friction, helps dissipate heat, and protects internal components from wear and tear.
Over time, oil loses some of its properties and becomes contaminated, making regular replacement essential.
However, there isn't a single universal rule for when to change motorcycle oil. The most important source is always the specific motorcycle manufacturer's maintenance schedule.
Why is it necessary to change motorcycle engine oil?
Engine oil performs several important functions:
- lubricates moving engine parts;
- reduces friction and wear;
- helps control engine temperature;
- collects some combustion and wear products;
- helps protect metal parts from corrosion;
- in motorcycles with a shared engine and gearbox oil system, it also participates in the operation of the transmission and clutch.
Used oil gradually oxidizes, becomes contaminated, and loses some of its lubricating properties. Therefore, exceeding the oil change interval for too long can increase engine wear.
When to change motorcycle oil?
The exact interval depends on:
- the motorcycle manufacturer and model;
- the engine design;
- the type of oil used;
- operating conditions;
- riding style;
- mileage and time.
Some motorcycles may require an oil change every few thousand kilometers, while other manufacturers may specify longer intervals.
Therefore, one should not blindly follow the universal rule "every 5000 km" or "once a year".
Check your motorcycle's owner's manual or service manual and follow the manufacturer's specified interval.
If the motorcycle is operated under more severe conditions – frequent short trips, aggressive riding, high RPMs, or in dusty environments – the manufacturer may recommend more frequent maintenance.
Do I need to change the oil before every season?
Not necessarily.
If neither the manufacturer's specified mileage nor time interval has been reached since the last change, you may not need to change the oil simply because a new season has begun.
However, the start of the season is a good opportunity to check:
- the oil level;
- when it was last changed;
- for any oil leaks;
- if the manufacturer's scheduled maintenance interval is approaching.
Does the oil filter need to be changed at the same time?
In most cases, the oil filter is changed along with the oil or according to a separate manufacturer-specified interval.
The exact schedule should also be checked in the specific motorcycle's manual.
A new filter helps ensure that fresh oil circulates through a clean filtration system.
What kind of motorcycle oil should I choose?
Here it is important not to choose based on viscosity alone, e.g., "10W-40".
You need to consider the full manufacturer's specified specification:
- SAE viscosity grade;
- API or other required specification;
- JASO class, when specified;
- whether the oil is suitable for motorcycles with a wet clutch.
Many motorcycles use oils that meet JASO MA or MA2 requirements, but this is not universal for all models.
Therefore, always check your motorcycle's manual first.
How to change motorcycle engine oil?
If you have the right tools and manufacturer's technical information, you can change the oil yourself.
The general workflow is usually as follows:
- Prepare the motorcycle and work area.
- Drain the old oil.
- Replace the oil filter, if planned.
- Install the drain plug according to manufacturer's requirements.
- Pour in the correct new oil.
- Start the engine and check the system.
- Recheck the oil level and for possible leaks.
However, details vary between motorcycles, so it's worth having the manual for your specific model.
1. Prepare the motorcycle
Park the motorcycle on a stable and level surface.
Depending on the model, oil level checks and changes can be performed with the motorcycle:
- vertically;
- on its center stand;
- or in another manufacturer-specified position.
Prepare a suitable container for the used oil under the engine.
It is also advisable to protect the floor from potential oil drips.
2. Drain the old oil
In most cases, oil drains more easily when the engine is slightly warm.
However, when working with a warm engine, be careful – the oil and engine parts can be hot.
Unscrew the oil drain plug and allow the oil to drain into the prepared container.
The motorcycle should not be excessively tilted or turned unless specified in the manufacturer's instructions.
3. Replace the oil filter
The filter design depends on the motorcycle.
Some models use an external spin-on filter, others a cartridge filter under a separate cover.
When changing the filter, it is important to:
- use the correct filter for the specific model;
- check the sealing elements;
- follow the manufacturer's specified installation method and torque.
If a spin-on filter is used, its O-ring is usually lightly lubricated with clean engine oil before installation.
4. Check the drain plug and washer
Before reassembling the system, check the drain plug and its sealing washer.
If the manufacturer specifies using a new washer, replace it.
It is especially important not to overtighten the drain plug. The threads in an aluminum crankcase can be easily damaged.
Therefore, it is best to use a torque wrench and the manufacturer's specified torque.
5. Pour in new oil
Pour in oil of the manufacturer's specified specification.
Do not blindly pour in the entire theoretically indicated amount – the amount may vary depending on whether the filter was changed, whether the engine was completely disassembled, etc.
Check the level according to the motorcycle manufacturer's specified procedure.
Depending on the model, this is done using:
- an oil level window;
- a dipstick;
- electronic level measurement.
6. Start the engine and check
After starting the engine, let it run briefly according to the manufacturer's instructions.
Check:
After turning off the engine, wait for the manufacturer's specified time and recheck the oil level.
If necessary, carefully top up.
Do not overfill with oil
Too little oil is dangerous, but too much oil is also not good.
Overfilling the system can increase pressure, cause foaming, or lead to other lubrication system problems.
Therefore, the oil level must be between the manufacturer's specified minimum and maximum limits.
Should I use an engine flush before changing the oil?
Not as a general rule.
An older article included advice to add an engine flush before an oil change and keep the engine running. I would not recommend performing such a procedure automatically for every motorcycle.
Additional engine flushing products should only be used when:
- the motorcycle manufacturer permits it;
- the product is clearly designed for a specific type of motorcycle system;
- its manufacturer's instructions are followed.
If in doubt, simple regular oil and filter changes are a safer strategy.
Regularly check your motorcycle's oil level
It's worth checking the oil level not just before maintenance.
This is especially relevant:
- before a long trip;
- for motorcycles that consume some oil;
- when operating the motorcycle intensively.
If you notice that the oil level is rapidly decreasing, it's worth investigating the cause rather than just constantly topping up.
Where to dispose of used motorcycle oil?
Used engine oil must not be:
- poured down the drain;
- poured onto the ground;
- discarded with household waste.
It must be collected in a sealed container and handed over to a facility that accepts used oil or hazardous waste.
Most importantly – consult your motorcycle's manual
The principle of oil change is similar in most motorcycles, but the oil quantity, specification, filter type, drain plug torque, and inspection procedure differ.
Therefore, it is always worth checking the technical information for your specific motorcycle before performing any work.
If you are unsure that you can change the oil correctly, it is best to contact a specialist.
Motorcycle oils and maintenance products from TMOTO
TMOTO's assortment includes engine oils for motorcycles, oil filters, chain lubricants, maintenance products, and other essential products for motorcycle operation.
If you don't know which oil or filter is suitable for your motorcycle, please contact us or visit the TMOTO store in Kaunas.