Honda CB300R Engine Oil Capacity and Best Oil Specifications

The CB300R is a type of motorcycle known as a "naked bike," characterized by its minimalist design and exposed engine components. It incorporates elements of the retro-inspired "neo cafe racer" style, which combines modern engineering with classic aesthetics for a sleek and stylish appearance. its produces since 2017 to 2024

It has 286cc total engine displacement, achieved through a combination of bore (the diameter of the cylinder) and stroke (the distance the piston travels inside the cylinder), specifically measuring 76mm x 63mm.

The engine of the CB300R is equipped with DOHC (Double Overhead Camshaft), featuring four valves per cylinder. Additionally, the engine is liquid-cooled, meaning it uses a liquid coolant to regulate temperature and prevent overheating during operation. In terms of performance, the CB300R's engine generates a maximum power output of 30.7 horsepower (HP) and a peak torque of 27 Newton-meters (Nm). 

For those who interested in maintaining their CB300R motorcycle, including the proper care of its engine, it's essential to know the recommended engine oil capacity. This information can be found in the official CB300RA manual book, which serves as a reliable source of guidance for owners and mechanics alike.

Checking the Engine Oil

  1. If the engine is cold, idle the engine for 3 to 5 minutes.
  2. Turn the ignition switch to the OFF position and wait for 2 to 3 minutes. 
  3. Place your motorcycle in an upright position on a firm, level surface.
  4. Check that the oil level is between the upper level and lower level marks on the oil level inspection window.
The image above is a way to see the correct oil capacity through the small glass hole on the right of the engine

Adding Engine Oil

If the engine oil is below or near the lower level mark, add the recommended engine oil

  1. Remove the oil fill cap. Add the recommended oil until it reaches the upper level mark.
    ▶Place your motorcycle in an upright position on a firm, level surface when checking the oil level.
    ▶Do not overfill above the upper level mark.
    ▶Make sure no foreign objects enter the oil filler opening.
    ▶Wipe up any spills immediately. 
  2. Securely reinstall the oil fill cap.

Changing Engine Oil & Filter

Changing the oil and filter requires special tools. We recommend that you have your motorcycle serviced by your dealer. Use a new Honda Genuine oil filter or equivalent specified for your model. 

Using the wrong oil filter can result in serious damage to the engine. 

  1. If the engine is cold, idle the engine for 3 to 5 minutes. 
  2. Turn the ignition switch to the OFF position and wait for 2 to 3 minutes. 
  3. Place your motorcycle on a firm, level surface. 
  4. Place a drain pan under the drain bolt.
  5. Remove the oil fill cap, drain bolt, and sealing washer to drain the oil.

  6. Remove the oil filter cover, oil filter, spring and gasket by removing the oil filter cover bolts and let the remaining oil drain out.
    ▶Discard the oil and oil filter at an approved recycling center.

  7. Install a new oil filter with its "OUT-SIDE" mark facing out. 
  8. Install the oil filter spring into the oil filter cover, and then install the oil filter cover with a new gasket. 
  9. Install and tighten the oil filter cover bolts. 
    Torque: 9 lbf·ft (12 N·m, 1.2 kgf·m)
  10. Install a new sealing washer onto the drain bolt. Tighten the drain bolt.
    Torque: 18 lbf·ft (24 N·m, 2.4 kgf·m) 
  11. Fill the crankcase with the recommended oil and install the oil fill cap.
    Required oil When changing oil & engine oil filter: 1.6 US qt (1.5 L)
    ▶When changing oil only: 1.5 US qt (1.4 L) 
  12. Check the oil level. Check that there are no oil leaks. 
  13. NOTICE Improper installation of the oil filter can result in serious damage to the engine.

Engine Oil Specification

Recommended engine oil:

API Service Classification SG or higher except oils labeled as energy conserving or resource conserving on the circular API service label, SAE 10W-30, JASO T 903 standard MA, Pro Honda GN4 4-stroke oil (USA & Canada) or Honda 4-stroke oil, or an equivalent motorcycle oil

Engine oil Changes Interval

According to the manual maintenance schedule, the oil change interval is as shown in the screenshot above. During the first 1000 kilometers, and subsequently every 6400 kilometers, the engine oil should be changed. However, it's not necessary to strictly adhere to this schedule, as the frequency of oil changes depends on factors such as driving style, environmental conditions, and engine condition. Typically, the recommended safe distance for an oil change falls within the range of 2000-3000 kilometers.


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