How to Change the Oil in a 2012 Honda CRF70F

Shop parts for a 2012 Honda CRF70F Dirt Bike.

MotoSport.com proprietary guide to changing the oil in your Honda CRF70F. Follow these step-by-step instructions to ensure a smooth, efficient oil change that keeps your dirt bike running at its best.

Tools and Supplies Needed

  • 17mm socket or wrench (for drain bolt)
  • Oil catch pan
  • Shop rags or paper towels
  • Measuring cup or funnel
  • Fresh engine oil: 10W-30 or 10W-40 four-stroke motorcycle oil (Honda recommends Pro Honda HP4S Full Synthetic or high-quality equivalent)
  • Replacement crush washer (recommended, if the old one is damaged)
  • Service manual (optional, for additional reference)

Preparation

  • Start the engine and let it idle for 3–5 minutes to properly warm up the oil. This helps the oil drain more quickly and completely.
  • Place the bike on a firm, level surface. Use the kickstand or a bike stand to ensure stability.
  • Turn off the engine and ensure the bike is cool enough to handle safely.

Step-by-Step Oil Change Process

  • Locate the drain bolt. The oil drain bolt is found on the right side of the crankcase. It is a 17mm plug positioned at the bottom of the engine.
    Important call-out: There is another similar plug on the other side with a spring—do not remove that one when changing oil; use only the proper drain bolt on the right side.
  • Drain the old oil. Position the oil catch pan under the drain bolt. Using your 17mm socket or wrench, carefully loosen and remove the drain bolt. Allow the oil to fully drain. To ensure thorough draining, gently tilt the motorcycle side to side. If necessary, replace the crush washer on the bolt for a proper seal.
  • Reinstall the drain bolt. Once the oil has stopped dripping, reinstall the drain bolt and hand-tighten, then snug it with your wrench. Do not overtighten, as this can strip threads or damage the seal.
  • Add new oil. Remove the oil filler cap/dipstick, which is located on the right side of the engine. Using a funnel, pour in fresh motorcycle oil:
    • Oil capacity: Approximately 0.6 quarts (19 oz) for a full oil change.
    • Pour slowly and check the level frequently to avoid overfilling.
  • Check oil level. With the motorcycle upright (not on the kickstand), insert the dipstick without screwing it in. Remove and read the level. If below the upper mark, add oil a bit at a time until proper level is reached.
    Do not overfill.
  • Start and check for leaks. Secure the filler cap. Start the engine and let it idle for 3–5 minutes. Stop the engine, wait a couple of minutes, and recheck the level. Top up slightly if needed. Inspect under the engine for any leaks, especially around the drain plug.
  • Dispose of old oil. Pour the used oil into a suitable container and take it to a recycling center or auto parts store for proper disposal. Never pour oil down the drain or onto the ground.

Specific Model Call-outs for the 2012 Honda CRF70F

  • Drain bolt location: Always use the right-side drain bolt (17mm), not the plug on the left with the spring and holes. Removing the wrong plug can damage the engine or release vital internal components.
  • Oil Type: Both conventional (10W-30/10W-40 motorcycle oil) and Honda HP4S full synthetic (10W-30) may be used. While some debate synthetic oil effects on clutches, Honda recommends HP4S synthetic for this bike and confirms clutch compatibility.
  • Engine oil quantity: About 0.6 quarts (19 oz). Overfilling can cause engine or seal problems.
  • No oil filter: The CRF70F uses a simple screen, not a replaceable spin-on filter. Oil changes are quick, but using clean oil is especially important.
  • Ease of Maintenance: The CRF70F is designed for easy servicing; expect the entire job to take under 30 minutes once you have supplies on hand.

Frequently Asked Questions (FAQ)

  • How often should I change the oil? For recreational trail use, Honda recommends every 600 miles or six months—whichever comes first. For competition or heavy use, more frequent changes (every 3–5 rides) are advised.
  • Can I use automotive oil? Only use oils formulated for wet-clutch motorcycles (JASO MA/MA2 certified), as automotive oil can cause clutch slippage.
  • Should I replace the drain bolt or washer? Inspect the bolt and crush washer each oil change. Replace if damaged, missing, or leaking.

Conclusion

Changing the oil in your 2012 Honda CRF70F is easy and cost-effective with basic tools and quality oil. Regular oil changes help extend engine life, maintain performance, and prevent costly repairs. For genuine parts and expert riding essentials, trust MotoSport.com—your source for everything dirt bike.

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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.