How to Change the Coolant in a 1995 Suzuki DR350
Shop parts for a 1995 Suzuki DR350 Dirt Bike.
Regularly changing the coolant in your 1995 Suzuki DR350 is essential for keeping your engine running cool, preventing corrosion, and maximizing the lifespan of your motorcycle. The DR350 features a simple air-cooled and oil-cooled system, meaning the coolant job focuses primarily on the oil cooler circuit and any aftermarket cooling modifications.
Before You Begin
- Ensure the engine is completely cold before starting. Hot coolant is pressurized and can cause severe burns when released. Never attempt this service on a warm or running bike.
- Gather your tools: basic socket set, flat-head screwdriver, drain pan, funnel, and required coolant or oil, depending on your DR350's setup. Choose high-quality coolant for any water-cooled modifications, or correct oil if changing oil cooler circuit fluid.
Step-by-Step Coolant Change for DR350
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Access the Cooling System
If equipped with an aftermarket water-cooling kit, remove any covers or bodywork near the radiator or oil cooler. For stock DR350s, locate the oil cooler up front–behind the front wheel. -
Release Pressure
Slowly loosen the radiator or oil-cooler cap to release any residual pressure. On the DR350, removing the oil cooler cap or hose clamp may suffice. Inspect the cap and sealing area for corrosion or deposits and clean as needed. -
Drain Existing Fluid
Place a drain pan underneath. Remove the drain plug at the bottom of the radiator or oil cooler (aftermarket kits), or from the engine case if draining oil. Allow fluid to drain completely–this can take a few minutes. Carefully dispose of old coolant or oil at a recycling facility. -
Flush the System (Optional but Recommended)
For water-cooled systems, flush with distilled water to remove contaminants. Add distilled water, run the engine briefly, allow to cool, then drain completely. For oil systems, use fresh oil as a rinse if you notice heavy contamination. -
Replace the Drain Plug
Reinstall and torque the drain plug to spec, ensuring any gasket or washer is in good condition. -
Refill with Fresh Coolant or Oil
Pour in the appropriate type and amount of fresh coolant or oil using a funnel. For water-cooled kits, use a 50–50 mix of ethylene glycol coolant and distilled water unless otherwise specified. For the oil side, use manufacturer-recommended viscosity and amount. -
Remove Air Pockets
Start the motorcycle and let it idle with the cap off to let air bubbles escape. As the liquid circulates, the level may drop. Top off as needed. When fluid stops dropping and no more bubbles appear, replace the cap securely. -
Final Checks
After cooling down fully, double-check both radiator/oil cooler and overflow reservoir levels. Top off again if required. Inspect for any leaks at fittings and plugs.
Special DR350 Owner Notes
- The stock DR350 is air and oil-cooled, without a traditional liquid coolant system unless modified. When referring to "coolant", DR350 owners typically mean the engine oil that passes through the oil cooler.
- Inspect all oil lines and cooling components (hoses, clamps, and oil cooler fins) for leaks, cracks, or corrosion, especially if riding in tough off-road conditions.
- Routinely change engine oil according to your riding demands, as it doubles as your engine's primary cooling agent.
- If your DR350 has an aftermarket radiator or water-cooling kit, always use recommended coolant–never plain water or automotive coolant, which may harm dirt bike seals and gaskets.
- Dispose of all fluids responsibly: coolants are toxic and must not be dumped in drains or on the ground.
Wrapping Up
Staying current with your DR350's coolant (or oil cooling) maintenance is the key to year-round reliability on the trail or track. If you need replacement hoses, gaskets, drain plugs, or fresh coolant, shop parts for a 1995 Suzuki DR350 Dirt Bike.
Related Shopping Categories
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Shop Radiator Hoses for a 1995 Suzuki DR350 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.