How to Change the Oil in a 1995 Suzuki DR350S: Your Complete MotoSport.com Guide

Shop parts for a 1995 Suzuki DR350S Dirt Bike.

Regular oil changes are essential for the 1995 Suzuki DR350S to keep its engine running smoothly and ensure a long life. This detailed guide walks you through each step, highlights all the tools you'll need, and includes important model-specific tips every DR350S owner must know.

Tools and Supplies Needed

  • 17mm, 19mm, 12mm, and 10mm sockets/wrenches
  • 8mm wrench
  • Socket wrench
  • Flathead screwdriver
  • Oil filter (OEM or high-quality aftermarket, such as Hiflofiltro)
  • 2 quarts of 10W-40 motorcycle oil
  • Replacement crush washers (highly recommended)
  • Oil catch pan
  • Gloves and shop rags
  • Optional: Needle nose pliers

What Makes the 1995 DR350S Oil Change Unique?

  • The DR350S features a dry-sump oil system, meaning oil is stored in both the engine and the frame, unlike many bikes that use a traditional wet-sump system.
  • There are two oil drain plugs: one for the engine and one for the frame. There's also an oil screen within the frame that should be checked and cleaned regularly.
  • A skid plate covers the bottom of the engine and frame drains and must be removed for a complete oil service.

Step-by-Step Guide

  1. Warm up the Engine
    • Start the bike and let it idle for 2–3 minutes. Warming the oil allows it to drain more completely, carrying away debris and contaminants that settle out when cold.
    • Turn off the engine and let it sit for a minute before draining.
  2. Remove the Skid Plate
    • Remove the four bolts (12mm) securing the skid plate. Two are on the sides and two in the front. Set the plate and bolts aside.
    • This step is essential for accessing both drain plugs and the oil screen. Some quick oil changes may not require plate removal, but a full service does.
  3. Drain the Engine Oil
    • Position your oil catch pan under the engine drain bolt (located beneath the engine).
    • Use a 17mm socket or wrench to loosen, then remove the drain bolt. Allow the oil to drain completely.
    • Inspect and replace the crush washer as necessary to ensure a proper seal when reinstalling the bolt.
  4. Drain the Frame Oil Reservoir
    • Locate the frame drain bolt (near the front, under the frame downtube).
    • Use a 12mm socket or wrench to remove this plug. Let all oil drain from the frame into your pan.
    • The dry-sump design keeps oil here and a separate drain is required.
  5. Check and Clean the Oil Screen
    • While the frame is draining, remove the oil screen from its housing (accessed by another bolt in the frame, typically requiring the needle nose pliers and a small wrench or socket).
    • Inspect the screen for debris or metal particles and clean thoroughly before reinserting. This step is not required at each oil change but is an excellent preventative maintenance practice.
  6. Replace the Oil Filter
    • Use the appropriate wrench (8mm or matching the bolts for the oil filter cover) to remove the cover, taking care not to lose the O-ring and internal spring.
    • Remove the old filter and install the new one, noting orientation (usually springs out toward the engine).
    • Clean the mating surfaces, reinstall the O-ring and spring, then reattach the cover securely.
  7. Reinstall Drain Plugs and Skid Plate
    • Ensure both drain bolts (engine and frame) have fresh crush washers and are torqued to factory specifications (refer to your service manual).
    • Reinstall the freshly cleaned oil screen into the frame with its cover/bolt.
    • Reattach the skid plate using the four bolts you previously removed.
  8. Add New Oil
    • Remove the oil filler cap (on top of the frame downtube near the steering head).
    • Fill with just under 2 quarts of 10W-40 motorcycle oil to start.
  9. Distribute and Check Oil Level
    • With the bike off, kick the engine through several times (using the decompression lever) to cycle oil throughout the system.
    • Start the engine and let it idle for 1–2 minutes, then turn it off and wait a minute.
    • Check the oil level with the dipstick or frame reservoir cap. Add oil as needed to bring it to the correct level (do not overfill).
  10. Double-Check for Leaks
    • Inspect both drain plugs and the oil filter cover for any signs of leaks while the engine is running and after the first short ride.
    • Tighten any bolts gently if seepage is spotted; do not overtighten, especially into the aluminum case.

Model-Specific Tips and Call-Outs for 1995 Suzuki DR350S

  • The dry-sump system requires draining both engine and frame. Skipping the frame drain leaves old oil and contaminates in your system, reducing the effectiveness of your oil change.
  • Always check and clean the frame oil screen at least every few oil changes. Skipping this step can lead to oil starvation or internal damage.
  • The skid plate can sometimes seize; apply a dab of anti-seize or lubricant to skid plate bolts upon re-installation.
  • Be vigilant about thread damage. The aluminum engine and frame can strip easily if drain bolts are overtightened. Follow torque specs closely.
  • There is no traditional oil pan—draining is via the frame and crankcase, so leaks or stripped threads can be costly if not properly handled.

Wrapping Up

  • Adhering to regular oil changes and strictly following this procedure helps keep your 1995 Suzuki DR350S performing at its best.
  • MotoSport.com recommends maintaining a log with oil change dates and types used, and considering the use of OEM filters and fresh crush washers for best results.
  • Dispose of used oil responsibly in accordance with local regulations.

Happy riding, and trust MotoSport.com for all your Suzuki DR350S maintenance parts and expert advice.

Related Shopping Categories

Shop Motor Oil for a 1995 Suzuki DR350S Dirt Bike.

Shop Oil Filters for a 1995 Suzuki DR350S Dirt Bike.

Shop Oil Drain Pans for a 1995 Suzuki DR350S Dirt Bike.

Shop Tools for a 1995 Suzuki DR350S Dirt Bike.

Shop Oil Fillers and Drain Plugs for a 1995 Suzuki DR350S 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.