An oil change is the single most important maintenance task you can do for your motorcycle. Fresh oil keeps the engine clean, cool, and protected — old degraded oil does the opposite, in every way. It's also the easiest job on the list: basic tools, about an hour, and the confidence to get your hands dirty.
If you've been paying a workshop R800–R1,200 to do this for you, it's time to learn. Here's exactly how.
Quick Summary
- Warm engine 3–5 min, let settle 5 min
- Level bike, drain pan in position
- Remove drain plug → drain old oil fully
- Remove and replace oil filter (lube the O-ring)
- New crush washer → torque drain plug to spec
- Add fresh oil → idle → check level
- Dispose of used oil responsibly
What You'll Need
Tools:
- Socket set (10mm–17mm covers most drain plugs)
- Oil filter wrench or strap wrench
- Drain pan (at least 4L capacity)
- Funnel
- Torque wrench — don't skip this
- Rags and latex gloves
- Paddock stand or centre stand (strongly recommended)
Consumables:
- Fresh engine oil (correct spec and quantity — check your service manual)
- New oil filter
- New drain plug washer (copper or aluminium — never reuse the old one)
Step 1 — Warm the Engine Up
Run your bike for 3–5 minutes. Warm oil drains faster and more completely than cold oil, and carries more suspended contaminants out with it. You want warm, not hot — give it 5 minutes to settle after switching off before you touch the drain plug.
Step 2 — Get the Bike Level and Stable
Centre stand if you have one. If not, a paddock stand under the swingarm. You want it as upright as possible — you'll be checking the oil level later and the reading will be wrong if the bike's leaning. Position your drain pan under the sump.
Step 3 — Remove the Drain Plug
Your drain plug is at the lowest point of the engine sump. Loosen it anticlockwise with the correct socket. Once it's finger-loose, slow down — hold the plug between your fingers for the last few threads, then pull it away quickly. Oil follows immediately and under pressure. Let it drain fully. Five to ten minutes. Remove the filler cap at the top of the engine while you wait — it breaks the vacuum and speeds up the drain.
Step 4 — Remove and Replace the Oil Filter
Usually on the side of the engine. Loosen anticlockwise with your filter wrench. Have rags ready — it'll have oil in it and it will spill.
Before fitting the new filter, dip your finger in clean oil and wipe it around the new filter's rubber O-ring seal. This helps it seat correctly and prevents tearing. Screw it on by hand until the O-ring contacts the housing, then a further ¾ turn by hand. That's it. Most filters don't need a wrench to tighten — overtightening deforms the O-ring and causes leaks.
Step 5 — Replace the Drain Plug
New crush washer every time. The old one has been compressed and won't seal correctly. Thread the plug in by hand, then torque to spec — typically 20–35Nm depending on your bike, check the manual. Overtightening strips the thread out of the sump. Undertightening causes an oil leak. Use the torque wrench.
Step 6 — Add Fresh Oil and Check
Add your specified quantity (typically 2.5–4L for most bikes — your manual is the authority). Start at the lower end of the range. Replace the filler cap.
Start the bike and idle for one minute. Watch the drain plug and filter for any seeping — sort it now if you see anything. Switch off, wait two minutes for the oil to settle back into the sump, then check your sight glass or dipstick. Top up as needed to reach the upper mark.
Choosing the Right Oil
This matters more than most people think. Your engine is designed around a specific viscosity and additive profile. Getting it wrong affects wet clutch performance (most bikes), long-term protection, and in some cases warranty validity.
The essentials:
- Use motorcycle-specific oil, not car oil — unless your manual explicitly permits it
- 10W-40 is the most practical all-rounder for SA conditions. For very hot conditions (Northern Cape summer, Lowveld) or hard riding, 10W-50 is worth considering
- Check for JASO MA or MA2 certification — automotive oils contain friction modifiers that cause wet clutch slip. If it doesn't say JASO MA/MA2 on the label, don't use it in a bike with a wet clutch
- Full synthetic = best protection, longest intervals. Semi-synthetic = solid middle ground. Mineral = fine for older engines with looser tolerances
| Oil Type | Best For | SA Change Interval |
|---|---|---|
| Mineral | Older bikes, tight budget | 3,000–5,000km |
| Semi-synthetic | Everyday riders, good value | 5,000–7,000km |
| Full synthetic | Performance, longevity | 7,000–10,000km or annually |
Widely available in SA: Motul 7100 (full synthetic, consistently the community favourite), Castrol Power 1 Racing, Shell Advance Ultra (often on special at Midas — excellent budget full-synth option), Liqui-Moly, Mobil 1 Racing.
Common Mistakes That Will Ruin Your Day
Not replacing the crush washer. The single most common cause of post-service leaks. They cost about R15. New one, every time, non-negotiable.
Overtightening the oil filter. Hand tight plus ¾ turn. If you go further with a wrench, you're either about to leak or you're buying a new filter housing.
Checking the level immediately after filling. The oil is still in the filter, passages, and galleries — not in the sump yet. Wait two full minutes after switching off. The reading is wrong if you don't.
Using car oil in a wet clutch bike. JASO MA/MA2 on the label. If it's not there, don't use it.
Forgetting the filler cap. You'll know within 30 seconds. Everyone does it once.
Long-term storage. Change the oil before you put the bike away for winter, not after. Old oil sitting in an engine picks up acidity over time and causes internal corrosion. Fresh oil in, bike covered, no problems.
Need oil, filters, or crush washers? Find your bike's consumables at MotoZA.