How to Change the Oil in a 1995 Suzuki DR350: A Complete Guide

Shop parts for a 1995 Suzuki DR350 Dirt Bike.

Changing the oil on your 1995 Suzuki DR350 is a vital part of routine maintenance that keeps your bike running smoothly for years to come. This guide, proprietary to MotoSport.com, walks you step-by-step through the process, highlighting the unique needs of the DR350 dry-sump system and providing key call-outs specific to this model year.

Tools and Supplies Needed

  • 17mm socket and wrench
  • 12mm socket and wrench
  • 10mm wrench
  • 19mm wrench (for some fittings)
  • Needle nose pliers
  • Screwdriver
  • Oil drain pan
  • Fresh oil (10W40 motorcycle-specific oil, approximately 2 quarts)
  • New oil filter
  • Clean rags
  • Disposable gloves
  • New crush washers for drain bolts (recommended)

Preparation

  • Warm up the engine for a few minutes. This thins the oil, allowing contaminants to drain thoroughly.
  • Park the bike on a level surface and switch off the ignition.
  • Have your tools and supplies prepared and nearby.

Unique Call-Outs for the 1995 Suzuki DR350

  • Dry-Sump Oil System:– Unlike many motorcycles, the DR350 stores oil in the frame, not just in the crankcase. This means you must drain oil from both the engine and the frame for a complete oil change.
  • Oil Screen in Frame:– The frame houses a screen filter that catches debris. You do not need to clean the screen at every oil change, but inspect/clean it at least once every few changes for optimal longevity.
  • Skid Plate:– You may need to remove the skid plate (held by four 12mm bolts) to access the frame drain bolt and oil screen, especially important for a complete oil change.

Step-by-Step Oil Change Instructions

  1. Remove the Skid Plate (if necessary):
    • Use a 12mm socket or wrench to remove the four bolts.
    • Set the skid plate and bolts aside.
  2. Drain Crankcase Oil:
    • Place the oil drain pan beneath the engine drain bolt on the crankcase (typically uses a 17mm socket).
    • Carefully loosen and remove the drain bolt. Allow oil to fully drain.
    • Replace the crush washer if possible.
  3. Drain Frame Oil:
    • Locate the frame drain bolt, typically near the downtube (12mm socket).
    • Position the drain pan underneath, loosen, and remove the bolt.
    • If you choose, use needle nose pliers to gently extract the oil screen for cleaning.
    • Replace the screen after cleaning, making sure it seats properly.
    • Replace the crush washer on the frame drain bolt.
  4. Remove and Replace the Oil Filter:
    • Locate the oil filter cover (right side of the engine, usually held by 8mm or 10mm bolts).
    • Remove bolts and cover, taking care not to damage the O-ring.
    • Remove the old filter and install the new one. Make sure any spring inside is in place.
    • Clean the cover mating surface and reinstall the cover with bolts, tightening to manufacturer torque specs.
  5. Reinstall Drain Bolts and Skid Plate:
    • Tighten both crankcase and frame drain bolts securely (do not overtighten;–you risk damaging delicate threads in the crankcase).
    • If removed, reinstall the skid plate.
  6. Add Fresh Oil:
    • Remove the oil filler cap on the frame's oil reservoir.
    • Add 10W40 motorcycle-specific oil. The DR350 typically takes around 2 quarts (check your owner's manual for your exact capacity—after oil and filter change, it is approximately 1.8L).
    • Do not overfill. Pour slowly and give oil time to settle.
  7. Prime the Oil System:
    • Before starting, use the kickstarter or starter button (with off/run switch off) and cycle the engine a few times to circulate oil throughout the system.
  8. Check Oil Level:
    • Start the motorcycle and let it run idle for a minute, then shut off.
    • Wait a minute or two for oil to settle in the frame, then check the level with the dipstick. Top off as needed.
  9. Dispose of Old Oil Responsibly:
    • Take used oil and filter to a recycling center or auto parts store that accepts oil waste.

Additional Tips Specific to the 1995 DR350

  • Crush Washers:– Always replace crush washers on both drain bolts to prevent leaks.
  • Don't Overtighten:– The aluminum threads in the crankcase and frame can be damaged easily—tighten just snugly.
  • Oil Screen Maintenance:– Clean the oil screen in the frame each time you remove it. Inspect for metal shards.
  • Use Motorcycle-Specific Oil:– Automotive oil may damage your clutch and gearbox—only use oils formulated for motorcycles.

Congratulations.

You've completed an oil change on your 1995 Suzuki DR350. Doing this job yourself every 1,000 to 2,000 miles ensures peak engine performance and longevity.

Content proprietary to MotoSport.com.

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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.