Honda SP 125 Engine Oil Capacity: What Owners Should Know
The Honda SP 125 typically takes about 0.8 litre (800 ml) of engine oil for a routine drain-and-refill; a completely dry engine (after a full teardown) may require closer to 0.9 litre. In everyday servicing, technicians usually add approximately 0.75–0.8 litre, then top up to the correct level on the dipstick. Below is a detailed look at the specifications, recommended oil, and practical tips to ensure accurate filling.
Contents
What Honda Specifies and Why It Matters
Honda’s small 124cc single-cylinder in the SP 125 uses a compact, air-cooled design with a wet clutch, so keeping the oil at the correct level is crucial for lubrication, cooling, and clutch longevity. The difference between “refill” and “total” capacity can lead to confusion, especially after different levels of disassembly or when shops fill by the bottle rather than by measurement.
Official Quantities and Practical Ranges
The following list summarizes the commonly referenced oil quantities for the SP 125 and how they apply in real-world servicing.
- Routine oil change (drain-and-refill): about 0.8 litre (800 ml)
- Completely dry engine (after overhaul/engine disassembly): up to ~0.9 litre
- Practical workshop fill: pour ~0.75 litre, then top up gradually to the dipstick “upper” mark
These figures reflect typical Honda guidance for the SP 125 and similar 124cc Honda engines. Always finalize the level using the dipstick rather than a fixed volume, as minor variations can arise between units and after different service procedures.
Recommended Oil Type and Viscosity
Choosing the right oil helps the SP 125’s wet clutch operate smoothly and protects the engine across temperature ranges. Honda’s own branded oil meets the required specifications, but any oil matching the standard will suffice.
What to Put In
The points below outline the specifications you should look for on the oil label and why they matter.
- Viscosity: 10W-30 (preferred for most climates); 10W-40 is acceptable in hotter conditions
- Specification: JASO MA or MA2 (for wet-clutch compatibility)
- API: SG/SJ or higher (modern detergent packages and protection)
Using JASO MA/MA2-certified motorcycle oil helps prevent clutch slip and ensures proper additive balance for shared engine/gearbox lubrication.
How to Check and Fill the Oil Correctly
Accurate filling depends on a proper level check. The SP 125 uses a dipstick; checking procedure matters for a precise reading.
- Warm the engine briefly, then shut it off and let it sit 2–3 minutes so oil returns to the sump.
- Keep the bike upright on level ground (use the main stand if fitted).
- Remove the dipstick, wipe it clean, reinsert without screwing it in, then remove to read.
- Aim for the oil level between the lower and upper marks; top up in small increments.
- After filling, run the engine for 30–60 seconds, wait a couple of minutes, and recheck the level.
This method compensates for oil trapped in passages and ensures the final reading reflects true operating level.
Service Intervals and Practical Tips
Regular changes keep the oil’s detergents and additives effective, especially under urban stop‑start use where heat cycles are frequent.
When to Change and What to Watch
The following pointers help you maintain consistent protection and performance.
- Change interval: follow the owner’s manual (commonly around every 6,000–10,000 km or 6–12 months, with an earlier first service)
- Riding conditions: shorten intervals for dusty, hot, or stop‑start commuting
- Filter note: the SP 125 uses a screen/centrifugal filtration setup, not a spin-on cartridge; clean per the manual when specified
- Drain bolt torque: tighten to the spec in your manual; use a new washer if required to prevent leaks
Adhering to the specified intervals and procedures avoids premature wear, keeps shifting smooth, and preserves fuel efficiency.
Why the Numbers Sometimes Vary
Owners may hear different figures—750 ml, 800 ml, or 900 ml—because capacity depends on how thoroughly oil is drained, whether internal passages were emptied, and if any engine work was done. That’s why Honda emphasizes checking the dipstick after filling rather than relying solely on a fixed quantity.
Bottom Line
For a standard service on the Honda SP 125, plan on approximately 0.8 litre of engine oil, using a JASO MA/MA2 10W-30. Add most of the volume, then top up to the dipstick mark with the bike upright, rechecking after a short run to ensure the level is correct.
Summary
The Honda SP 125 typically needs about 0.8 litre of oil for a regular change and up to ~0.9 litre if completely dry after major work. Use 10W-30 motorcycle oil meeting JASO MA/MA2 (API SG/SJ or higher), fill gradually, and confirm the level on the dipstick with the bike upright. Following this routine maintains smooth performance and engine longevity.
What kind of oil does a Honda 125 take?
Recommended Oil: Honda, like most manufacturers, recommends using its own brand of oil. For the Honda 125, this is typically a 10W-30 viscosity oil.
How much oil does a 125 engine need?
80cc / 85cc / 100cc / 125cc / 144cc :-
600ml in all engines 2006 onward, or, as advised in the user manual.
How much oil does a Honda 125 take?
BBR Jetting Chart
| Displacement | 124.9cc |
|---|---|
| Valve Clearance | IN: 0.004″ / EX: 0.006″ |
| Carb/main jet/pilot jet | Keihin PD20 (PDB4BA) / 112 main / 38 pilot |
| Transmission ratios | 3.181 / 1.705 / 1.238 / 0.916 |
| Oil Capacity/Type | 1.0 US quart (refill)/ 1.1 quart (rebuild) / SAE 10W-40 |
How much engine oil for Honda SP 125?
The engine oil capacity of Honda SP 125 is 0.9-liters.
