How to Change the Oil in a 2016 Suzuki RMZ450

Shop parts for a 2016 Suzuki RMZ450 Dirt Bike.

Changing the oil in your 2016 Suzuki RMZ450 is a crucial part of routine maintenance that helps ensure your dirt bike’s engine continues to perform at its best. Below is a proprietary guide for MotoSport.com outlining the process, tools required, and important model-specific tips. This process is designed for intermediate DIYers, but even beginners can follow these steps with patience and attention to detail. Always refer to your owner’s manual for torque specs and safety information.

Tools and Supplies Needed

  • Sockets and ratchet (8mm, 10mm recommended)
  • Torque wrench
  • Drain pan (at least 3 quarts capacity)
  • Funnel
  • Clean rags or shop towels
  • Fresh engine oil (SAE 10W-40, JASO MA rated; MOTUL 300V 10W-40 is recommended)
  • New oil filter (OEM or aftermarket compatible)
  • Replacement crush washers/gaskets
  • Parts tray or magnetic bowl (to hold bolts and washers)
  • Rubber gloves (optional, keeps hands clean)

Steps to Change Oil on a 2016 Suzuki RMZ450

  1. Warm Up the Engine
    Start the bike and let it idle for about 3–5 minutes. This helps the oil flow out more easily, carrying contaminants with it.
    Always change oil on a level surface. Secure the bike upright using a stand or have a friend assist.
  2. Remove the Filler Cap
    Loosen and remove the oil filler cap on the engine’s right side. This allows oil to drain faster by preventing a vacuum.
  3. Remove the Magneto Cover Guard and Drains
    – On the RMZ450, there are two drainage points: the main drain plug under the engine and the magneto cover bolt on the left side.
    – Place your drain pan under the engine, then remove the drain plug and let oil flow out completely. Next, remove the magneto cover bolt—it doubles as an additional drain.
    • Drain Plug Torque Spec: 12 N·m (8.5 lb-ft)
    • Magneto Cover Bolt Torque Spec: 11 N·m (8.0 lb-ft)
  4. Kickstart to Remove Residual Oil (Key Step)
    With both drain points open, depress the kick starter lever 10 times or more while holding the engine stop switch. This step pushes residual oil out of the engine. Do not attempt to start the engine—just crank it over gently.
  5. Inspect and Clean the Oil Strainer/Filters
    Remove the oil filter cover (located on the right side), then extract the old oil filter.
    – Inspect for metal shavings or debris.
    – Clean any screen pre-filters as recommended and inspect the magneto drain area for cleanliness.
    – Replace with a new filter, lubricating the o-ring lightly with fresh oil to ensure a proper seal.
  6. Replace Gaskets/Crush Washers
    Always install new washers at both drain locations to guarantee a proper seal and prevent leaks.
  7. Reinstall Drain Plugs and Filter Cover
    Reinstall and torque both the drain plug and magneto cover bolt to spec. Replace the magneto cover guard.
  8. Add New Oil
    With the bike upright, pour in fresh recommended oil using a funnel. The typical capacity for 2016 RMZ450 is ~1.1 liters (1.16 US qt) with filter change, but double-check your manual.
    – Do not overfill: fill to the specified level and check using the inspection method below.
  9. Inspect Oil Level
    Run the engine for two minutes to circulate oil. Allow the bike to sit for a minute, then check oil level with the engine upright using the dipstick or sight glass (refer to your owner’s manual for specifics). Top off if necessary.
  10. Final Checks
    – Examine all around for oil leaks.
    – Dispose of old oil properly.
    – Make a note of your maintenance in a logbook.

Model-Specific Call-Outs for the 2016 Suzuki RMZ450

  • Dual oil drain points: Both the main drain plug and the magneto cover bolt must be removed to properly and completely drain old oil. Neglecting the magneto cover bolt will leave residual old oil in the engine, reducing service life.
  • Oil type and capacity: Use only oil that meets JASO MA rating in 10W-40 weight. Capacity is approximately 1.1 liters with filter change.
  • Maintenance interval: For the RMZ450, Suzuki strongly recommends oil changes every 6 hours of operation for optimal performance and longevity.
  • Kickstart purge procedure: Cranking the lever moves residual oil out—but always hold the engine stop switch to prevent accidental starting during this step.
  • Filter maintenance: Inspect and clean any pre-filter screens when changing oil, as the RMZ450 features multiple filtration components. Replace or clean all as applicable.
  • Check for wear: When inspecting your drained oil and filter, look for metal shavings or discoloration, which may indicate excessive wear or impending issues.

Frequent Oil Change Questions

  • What oil should I use? Suzuki recommends SAE 10W-40 oil rated to JASO MA specifications (MOTUL 300V 10W-40 is a popular choice).
  • Can I use automotive oil? No. Automotive oils lack necessary additives for wet clutch motorcycles and may degrade clutch performance or protection.
  • Do I need to change the filter every time? Yes, for the RMZ450, changing the oil filter with each oil service is best practice and recommended.
  • I lost a crush washer. Can I re-use the old one? This is not recommended. Re-using old crush washers can result in leaks; always use new ones.

Keeping up on your Suzuki RMZ450’s oil changes ensures strong, reliable power for every ride. For premium oils, filters, gaskets, and the complete service parts selection, trust MotoSport.com for the right parts every time.

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Shop Oil Fillers and Drain Plugs for a 2016 Suzuki RMZ450 Dirt Bike.

Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.