DS625X Engine Oil & Oil Element Change

The DS625X uses a wet-sump lubrication system with a single drain plug at the lower left of the engine and a replaceable oil element behind a small cover at the front of the engine. The procedure mirrors the DS525X but with a larger oil capacity and slightly different fairing access. Per the official service schedule, oil and the oil element are replaced together at every service interval - first service at 1,000 km, then every 6,000 km or 12 months whichever comes first.

The full job takes about 30-40 minutes including warm-up and a fresh-fill check.

Specifications at a glance

Item	Value
Oil grade	SAE 10W-40
API quality	SL or higher - not energy-saving / “Resource Conserving”
Oil capacity (drain + element replaced)	3.0 L
Drain plug torque	Per Voge specification (see service-manual table)
Oil element location	Front of engine, behind small cover
Oil element seal	O-ring on element cover - replace if damaged

The 10W-40 viscosity covers most temperatures; in cold winter use Voge calls out 5W-40 or 0W-40 alternatives, then return to 10W-40 in summer.

Don’t use energy-saving oils (those marked with a green “Resource Conserving” stripe on the API donut). They contain friction modifiers that cause clutch slip on a wet-clutch motorcycle. JASO MA / MA2 spec is the safer wet-clutch indicator - check that the bottle prints both API SL+ and JASO MA.

What you need

• 3.0 L of fresh 10W-40 SL+ oil (a 4 L jug covers the change with leftover for top-ups)
• New oil element (Voge OEM cartridge for the KEL600)
• New copper sealing washer for the drain plug (Voge specifies replacement at every change)
• Socket / wrench for the drain plug
• Torque wrench
• Drain pan (4 L+ capacity)
• Funnel, rags, gloves
• Oil disposal container

Procedure

1. Warm the engine

Ride for 5-10 minutes, or run the engine on the centre stand until at operating temperature. Warm oil drains faster and carries more contamination out with it.

2. Park upright, prepare

Park on the centre stand on level ground. Stop the engine. Place the drain pan under the engine.

Remove the oil filling-up port cap (turn anticlockwise) - this loosens the engine for faster drain.

3. Drain the oil

The drain plug is at the lower left of the engine (left side as you sit on the bike). Loosen with the appropriate socket and let the oil drain into the pan.

Wait until the flow has slowed to drips - 5-10 minutes for a full drain. Don’t rush this; getting old oil out completely is the whole point. The KEL600 holds 3.0 L vs the KEL500F’s 2.5 L, so allow extra drain time.

The drain plug uses a copper sealing washer that should be replaced at every change. Install the new washer before refitting the plug.

4. Replace the oil element

While oil drains:

• Remove the lower fairing cover to access the oil element cover.
• Place a paper towel under the cover to catch oil.
• Remove the cover - it sits at the front of the engine.
• Pull out the old element. It will hold a small amount of oil - direct it into the drain pan.
• Wipe the cover and seat clean.
• Check the o-ring on the cover - if it’s flattened, cracked, or damaged, replace it. Even small damage causes oil leaks.
• Install a new element in the correct orientation.
• Refit the cover, ensuring the o-ring is properly seated.

5. Reinstall drain plug

Refit the drain plug with the new copper washer. Tighten to spec - don’t over-torque. The threads are in aluminium and stripping them is an expensive repair.

6. Refill

Pour 3.0 L of fresh oil through the filler port using a funnel. Pour slowly - the crankcase has internal galleries that take a moment to fill.

7. Check oil level

The DS625X uses a sight glass on the right crankcase, not a dipstick. Voge’s procedure for accurate reading:

1. Start the engine and run briefly to circulate fresh oil.
2. Stop and let the bike sit upright for a minute so oil returns to the sump.
3. Look through the sight glass on the right crankcase.
4. Oil level should be between the UPPER and LOWER scale marks.

If above UPPER, drain a small amount via the drain plug. If below LOWER, add small increments (50-100 ml) and recheck.

8. Verify no leaks

Run the engine 2-3 minutes. Stop. Inspect the drain plug and oil element cover for weeping. A trace of dampness on a brand-new sealing washer is acceptable; a continuous drip is not.

9. Disposal

Used oil is hazardous waste. Pour into a sealable container and take to a free oil drop-off (most auto-parts shops, recycling centres, petrol stations).

Common pitfalls

• Wrong oil grade. API SL+ and JASO MA are both required on a wet-clutch motorcycle. Bargain-bin SAE 10W-40 missing JASO MA causes clutch slip within a few hundred km.
• Reusing the copper washer. Voge specifies replacement. Old washers are work-hardened and won’t seal as well, leading to slow weeping.
• Wrong oil element. Voge specifies their original parts. Generic aftermarket elements may have wrong filtration micron rating and bypass valve behaviour.
• Over-torquing the drain plug. Aluminium threads strip easily.
• Reading the sight glass on the side stand. Always upright. Side-stand reading is wrong by enough to mislead.
• Underfilling because you used the DS525X’s 2.5 L figure. The KEL600 needs 3.0 L. Underfilled engines run hot, oxidise oil faster, and shorten engine life.
• Skipping the element replacement to save money. The element is what catches metallic debris from normal engine wear. Skipping it shortens engine life materially - false economy.

Cross-reference

The KEL600 is mechanically related to but distinct from the KEL500F in the DS525X. They share the same oil grade (10W-40 SL+) and JASO requirement, but capacities differ:

Spec	DS625X (KEL600)	DS525X (KEL500F)
Displacement	581 cc	494 cc
Bore x Stroke	76 x 64 mm	68 x 68 mm
Oil capacity	3.0 L	2.5 L
Compression	11.5:1	11.5:1
Spark plug	NGK CPR8EA-9 (gap 0.8-1.0 mm)	NGK CPR8EA-9 (gap 0.8-0.9 mm)

Don’t substitute capacities between bikes - 2.5 L is too little for the KEL600.

Sources

• Voge DS625X Owner’s Manual (Hungarian) - oil change and oil element procedure plus oil specification.
• Voge DS625X Maintenance Schedule - service interval table confirms the 1,000 km / 6,000 km cadence.

If you’ve found a useful trick or tooling tip for this procedure, send it in and we’ll fold it into the guide.