How to Change the Oil in a 2018 Suzuki DR-Z70: A MotoSport.com Exclusive Guide

Shop parts for a 2018 Suzuki DR-Z70 Dirt Bike.

Keeping your Suzuki DR-Z70 running strong means regular oil changes—it's the single most important maintenance task you can do for your dirt bike. This guide covers exactly how to change the oil on a 2018 Suzuki DR-Z70, calls out important model-specific notes, and lists the must-have tools. Follow these steps for a smooth DIY oil change and keep your ride at peak performance.

Tools and Supplies Needed

  • 12mm wrench or socket – for the oil drain bolt
  • Oil catch pan – to collect old oil
  • Funnel – to pour new oil cleanly
  • Measuring cup – to measure new oil, set to 700 ml
  • Clean rag – to wipe up spills and clean dipstick
  • Recommended oil: 10W-40 4T motorcycle oil (Full synthetic preferred)
  • New crush washer for drain bolt (optional but recommended)
  • Nitrile gloves (optional, for less mess)

Before You Start: Key DR-Z70 Model Call-outs

  • Change oil with a warm engine: Run your bike for a few minutes. Warm oil drains more easily and thoroughly.
  • Oil capacity: 700 milliliters (ml). Do not overfill—DR-Z70 engine markings confirm this capacity on the crankcase itself.
  • No oil filter to replace on this engine—just the oil. Super easy.
  • Use only motorcycle-specific oil: This bike uses a shared lubrication system for the engine, clutch, and transmission. Automotive oil can damage the clutch.
  • Automatic (no manual clutch): Don't confuse the DR-Z70's auto clutch, which is lubricated by the engine oil—extra reason to use the correct oil type.

Step-By-Step Oil Change Instructions

  1. Warm the engine
    Let your bike idle for 2–3 minutes to warm up the oil. This ensures contaminants are suspended and will drain with the old oil.
    Caution: Do not let the bike get hot. Warm to the touch is enough.
  2. Stabilize the bike
    Place the bike on a flat, stable surface. Use the side stand, or for a more complete drain, an upright bike stand if available.
    Pro tip: Place cardboard under the engine to catch any drops or prevent stains.
  3. Loosen the oil fill cap
    Remove the oil cap/dipstick on the right side of the engine. This helps the oil drain out smoothly without creating a vacuum.
  4. Position the oil pan
    Slide the oil catch pan under the engine, directly beneath the drain bolt (located on the bottom of the engine case).
  5. Remove the drain bolt
    Using your 12mm wrench or socket, carefully loosen and remove the drain bolt. Allow the old oil to drain out completely.
    Tip: Hold the bolt loosely as the last threads come out to avoid dropping it in hot oil. If using, replace the old crush washer with a new one.
  6. Inspect the oil and bolt
    Look at the old oil. Dark oil is normal; metal, grit, or a milky appearance could indicate issues. Clean the drain bolt threads and washer.
    Call-out for DR-Z70: The drain bolt is standard—no magnet. A few tiny metal flecks are common but major shavings mean a professional inspection is needed.
  7. Reinstall the drain bolt
    Wipe the drain hole, thread the bolt by hand to avoid cross-threading, then tighten snugly with the wrench. Do not over-torque; 6.5 lb-ft (9 Nm) is typical.
  8. Refill with new oil
    Using a funnel, pour 700 ml of 10W-40 4T motorcycle oil into the fill port.
    Tip: Always measure the oil, as over-filling can damage the engine.
  9. Reinstall the oil cap/dipstick
    Screw in the cap until seated.
  10. Check for leaks
    Wipe down the engine and run the bike for one minute. Inspect around the drain bolt and fill cap for leaks. Tighten as needed if anything seeps.
  11. Verify oil level
    Shut off the bike, let it sit for one minute, then unscrew and clean the dipstick. Reseat (do not screw in), remove, and check that oil is between the full and low marks. Adjust as necessary, but never exceed the 700 ml capacity.
  12. Dispose of old oil responsibly
    Take your used oil to an auto parts store or recycling facility. Never pour it down the drain or into the ground.

Frequently Asked Questions for 2018 Suzuki DR-Z70 Oil Changes

  • How often should I change the oil? Every 15–20 hours of riding, or at least once per season if not ridden much.
  • My oil looks dark—is that bad? No, oil turns dark as it collects impurities. Milky or metallic-smelling oil is a red flag, though.
  • Can I use car oil? Never. Motorcycle-specific 4T oils are designed for wet clutches and shared lubrication systems.
  • Do I need to change the oil filter? No oil filter to replace on this model—just regular oil changes keep the engine protected.

Switching out the oil on your 2018 Suzuki DR-Z70 is quick and simple with the right tools and knowledge. Enjoy the smoother ride, longer engine life, and peace of mind that comes from regular maintenance. Ride on, from your friends at MotoSport.com.

Related Shopping Categories

Shop Motor Oil for a 2018 Suzuki DR-Z70 Dirt Bike.

Shop Oil Filters for a 2018 Suzuki DR-Z70 Dirt Bike.

Shop Oil Drain Pans for a 2018 Suzuki DR-Z70 Dirt Bike.

Shop Tools for a 2018 Suzuki DR-Z70 Dirt Bike.

Shop Oil Fillers and Drain Plugs for a 2018 Suzuki DR-Z70 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.