DS900X Engine Oil & Secondary Oil Filter Change

The DS900X uses a wet-sump lubrication system with two drain points (oil bottom case + oil tray) and a secondary oil filter that should be replaced at every regular oil change. The full job takes about 45 minutes including warmup and cleanup.

Per the official service schedule, oil + secondary filter is replaced at every service interval - first service at 1,000 km, then every 10,000 km or 12 months, whichever comes first.

Specifications at a glance

Item	Value
Oil grade	SAE 5W-40
API quality	SL or higher - not energy-saving / “Resource Conserving” oils
JASO standard	MA2 (wet clutch - required)
Oil capacity (drain only)	2.7 L
Oil capacity (drain + secondary filter replaced)	3.0 L
Oil capacity (engine rebuild / dry fill)	3.2 L
Bottom-case drain plug torque	25 N.m (M16, replace washer)
Oil tray drain plug torque	10 N.m (M10, replace washer)
Secondary oil filter torque	11 N.m (M18)
Tube joint of secondary filter (rarely serviced)	35 N.m (M20)

The “API SL or higher, not energy-saving” point is non-negotiable on a wet-clutch motorcycle. Energy-saving oils (marked with a green “Resource Conserving” stripe on the API donut) contain friction modifiers that cause clutch slip. JASO MA2 explicitly excludes those modifiers - buy oil that prints both API SL+ and JASO MA2 on the bottle.

What you need

• 2.7 or 3.0 L of fresh 5W-40 oil (3.0 L if replacing the secondary filter, which you should - full bottle of a 4 L jug is fine)
• New secondary oil filter (M18 cartridge - Voge OEM or any quality aftermarket equivalent)
• Two new sealing washers for the drain plugs (one for bottom case, one for oil tray - Voge specifies replacement at every change)
• 17 mm socket and 14 mm socket (drain plugs)
• Cap-shaped wrench for the secondary oil filter (Voge specifies their special tool, but standard M18 cartridge filter wrenches work)
• Torque wrench (10-25 N.m range)
• Drain pan (4 L+ capacity)
• Funnel, rags, gloves
• Oil disposal container (do not pour oil down drains - most municipalities have free oil drop-off at recycling centres or auto-parts shops)

Procedure

1. Warm the engine

Ride for 5-10 minutes, or run the engine on the centre stand until the cooling fan kicks in (you’ll hear it). Warm oil drains faster and more completely than cold oil, and carries more contamination out with it.

2. Park level, prepare

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

Remove the oil dipstick / filler cap (loosens the engine for faster drain - air has to enter as oil leaves).

3. Drain - bottom case first

Locate the bottom case drain bolt (M16, on the lower portion of the crankcase). Loosen with a 17 mm socket and let the oil drain. This bolt comes with a copper / aluminium sealing washer that should be replaced - keep the old one in case you don’t have a new one on hand, but order a fresh one for the next change.

Wait until the flow has slowed to drips (5-10 minutes). Don’t rush this - getting all the old oil out is the whole point.

4. Drain - oil tray

Once the bottom case has finished draining, locate the oil tray drain bolt (M10, on the oil collection tray). Loosen with a 14 mm socket. Let the residual oil drain - usually a small additional amount.

This second drain point is what makes the DS900X’s drain procedure different from typical bikes. Skip it and you leave 100-200 ml of old oil in the tray, which contaminates fresh oil at refill.

5. Optional: replace the secondary oil filter

You should be doing this at every oil change. While the oil is still draining:

• Locate the secondary oil filter on the engine. It looks like a small spin-on cartridge.
• Use a cap-shaped oil filter wrench to remove the old filter. It will hold a small amount of oil - direct the open end into the drain pan as you pull it off.
• Inspect the filter base on the engine - wipe clean with a lint-free rag.
• Take the new filter and coat the rubber o-ring with fresh engine oil. Also coat the threaded portion lightly. This prevents the o-ring from twisting / pinching during installation.
• Hand-thread the new filter onto the engine until the o-ring contacts the engine surface. Then tighten with a torque wrench to 11 N.m.

If you don’t have a torque wrench available, the manufacturer rule of thumb after o-ring contact is “3/4 turn by hand” - but a torque wrench is strongly preferred.

6. Reinstall drain plugs

Replace the sealing washers on both drain plugs. Reinstall in this order:

• Oil tray drain plug - torque 10 N.m.
• Bottom case drain plug - torque 25 N.m.

Don’t over-torque. The drain plugs thread into aluminium and stripping the threads on the bottom case is an expensive repair (helicoil or thread-sert).

7. Refill

Pour fresh oil into the filler hole using a funnel:

• 2.7 L if you didn’t change the secondary filter
• 3.0 L if you replaced the secondary filter

Pour slowly. The crankcase has internal galleries that take a moment to fill. Don’t trust the dipstick yet - refilling beats dipsticking on a freshly-emptied engine.

8. Check oil level

Critical: Voge’s procedure for accurate dipstick reading on a fresh fill is specific:

1. Start the engine on the centre stand.
2. Idle until the cooling fan begins working (visible / audible).
3. Continue idling for 1 more minute.
4. Stop the engine.
5. Wait 1 minute for oil to return to the sump from the galleries.
6. Pull the dipstick, wipe with a lint-free rag, insert and screw it in by 1 full turn, then remove and read the level.

The oil level should be between the high and low marks. If below the low mark, top up with small increments (50-100 ml) and recheck.

The “screw in by 1 turn before reading” detail is from the workshop manual - most owners read with the dipstick simply resting in the hole, which gives a slightly different reading than the procedure assumes.

9. Verify no leaks

Run the engine for 2-3 minutes. Stop. Visually inspect the bottom case drain plug, oil tray drain plug, and secondary filter for weeping. A tiny amount of dampness on a brand-new sealing washer is acceptable; a continuous drip is not.

If anything is leaking, address before riding.

10. Reset the service indicator

The dashboard’s service-due reminder won’t clear itself. See the DS900X service indicator reset guide for the 3-button procedure (takes about 10 seconds).

11. Disposal

The drained oil is contaminated and considered hazardous waste. Pour it into a sealable container (the empty 4 L oil jug works) and take it to a free oil-disposal point - most auto-parts shops, recycling centres, and many petrol stations accept used motor oil.

Common pitfalls

• Wrong oil grade. API SL+ and JASO MA2 are both required. Bargain-bin SAE 10W-40 missing JASO MA2 will cause wet-clutch slip within a few hundred km. The cost difference between correct oil and wrong oil is 5-10 euros - never worth saving on.
• Skipping the oil tray drain. Voge’s two-stage drain leaves residual oil in the tray if you forget the second plug. The tray plug is smaller (M10) and easy to overlook on a first oil change. Look for both plugs before you start.
• Reusing sealing washers. They compress on first installation. Reusing means slow weeping that gets worse over time. Buy a small bag of crush washers in M10 and M16 sizes - they’re a euro each and last forever in your toolkit.
• Over-torquing drain plugs. The crankcase is aluminium. 25 N.m on the M16 means 25 - not “tight enough.” A click-type torque wrench is the right tool here.
• Reading the dipstick wrong. The 1-minute wait + 1-turn-screw-in procedure is documented in the workshop manual. Reading hot, immediately after engine stop, gives a low reading; reading cold gives a slightly high reading.
• Forgetting the indicator reset. The bike will keep showing the wrench icon until you reset it manually - see step 10.

Cross-reference

The KEL895 / LX286MX engine is mechanically near-identical to the engine in BMW’s F900 GS / R / XR. The oil grade specification (5W-40, API SL+, JASO MA2) and the dual-drain procedure are both shared. The capacities differ slightly between the Voge and BMW versions (the BMW pan is shaped slightly differently), so use the Voge capacities here for the DS900X.

Sources

• Voge DS900X Engine Service Manual (English) - pages 20-22 cover the oil change and secondary filter procedures and specifications. This guide is condensed and reorganised from those pages.
• Voge DS900X Owner’s Manual (English) - service intervals confirm the 1,000 km / 10,000 km cadence and the “R” replace-at-every-interval rule.
• DS900X torque specifications - full table for cross-reference.

If you find better tools or have shop notes that improve the procedure (especially around drain plug access and filter wrench compatibility), send them in and we’ll add them.