How to Change the Oil in a 1996 Suzuki DR350S

Shop parts for a 1996 Suzuki DR350S Dirt Bike.

If you ride a 1996 Suzuki DR350S, performing regular oil changes is crucial to keep your engine healthy and running smooth. This guide walks you through the process step by step, highlighting specific features of the DR350S’s dry-sump oil system. All information is proprietary to MotoSport.com.

Tools and Supplies Needed

  • 17mm wrench
  • 12mm wrench or socket
  • 10mm wrench (for some bolts and hose clamps)
  • 19mm wrench (for oil line fittings if needed)
  • 8mm wrench or socket (some filters require this size)
  • Flathead screwdriver
  • Needle nose pliers (helpful for clamps)
  • Fresh 10w40 motorcycle oil (at least 2 quarts, check manual for capacity)
  • New oil filter
  • New crush washers (recommended for drain bolts)
  • Oil drain pan
  • Shop towels or rags
  • Gloves

Special Call-Outs for the 1996 Suzuki DR350S

  • The DR350S uses a dry-sump oil system, with oil stored in the frame, not just the engine.
  • There’s an oil screen inside the frame as an additional filter; clean occasionally, but not at every oil change.
  • Removal of the skid plate (held by four 12mm bolts) is suggested for a complete oil change, especially if cleaning the oil screen.
  • Be careful not to overtighten the drain bolts; the crankcase is soft alloy and threads can strip easily.
  • Always use the specific oil type—10w40 motorcycle oil is recommended.

Step-by-Step Oil Change Process

  • Warm up the Engine
    • Start the bike and let it idle for 2–3 minutes. Warming the oil helps it drain faster and more completely.
  • Remove the Skid Plate
    • If doing a full oil/filter/screen change, use a 12mm wrench/socket to remove four bolts securing the skid plate, and set the plate aside.
  • Drain the Engine Oil
    • Place your drain pan under the engine. Use a 17mm wrench to remove the engine drain plug (located under the crankcase). Allow all the oil to drain out.
    • Replace the crush washer if available and inspect the plug for damage or debris.
  • Drain the Oil from the Frame
    • Locate the oil drain bolt on the frame’s down-tube–this is unique to the DR350's dry-sump system.
    • Use a 12mm wrench to remove the bolt, letting the oil drain fully from the frame. Replace the crush washer.
  • Clean or Replace the Oil Screen (Optional, but Recommended Every Few Changes)
    • If you’re servicing the oil screen, remove it per the service manual instructions, inspect and clean any debris, then reinstall securely.
  • Replace the Oil Filter
    • Use an 8mm wrench to remove the oil filter cover (usually on the engine’s right side). Note how the filter is oriented so you install the new one correctly.
    • Remove the old filter, install the new filter in the same direction, and torque the filter cover bolts evenly.
  • Reinstall Drain Bolts and Skid Plate
    • Reinstall the engine and frame oil drain bolts with new crush washers. Tighten to the specified torque (do not overtighten–DR350 threads can strip easily).
    • Reattach the skid plate with the four 12mm bolts.
  • Add New Oil
    • Remove the oil cap and slowly pour in the specified amount of 10w40 motorcycle oil. The typical fill for a DR350S (after filter change) is about 2 quarts, but always check your manual for the precise amount needed.
    • Let the oil settle for a moment and check the dipstick or sight glass to ensure you’re at the right level.
  • Cycle the Engine
    • With the ignition off, gently kick the bike over a few times (with the decompression lever in) to circulate oil in the system.
    • Start the engine and let it idle for a minute, then shut it off and recheck the oil level. Top off if needed.
  • Dispose of Used Oil Properly
    • Take the used oil and filter to a recycling center or auto parts store; do not pour it down drains or into the ground.

Final Tips for DR350S Oil Changes

  • Inspect all gaskets and O-rings; replace as needed to prevent leaks.
  • If you removed the oil screen, be sure it is seated and sealed properly before running the engine.
  • Keep a maintenance log of oil changes and any observations.

Routine oil changes on your 1996 Suzuki DR350S will ensure years of reliable fun, whether you’re hitting the trails, commuting, or adventuring. For OEM oil filters, genuine Suzuki crush washers, and recommended motorcycle oils, visit MotoSport.com—your dirt bike experts.

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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.