How to Change the Oil in a 2021 Beta 350 RR-S: The Essential Guide
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Keeping your 2021 Beta 350 RR-S running at its best starts with routine oil changes. This premium 4-stroke dual sport uses a twin sump system—dedicated oil for the engine and separate for the transmission—which is crucial for keeping performance and reliability at a peak. Regular oil changes ensure smooth shifting, proper clutch feel, and maximum engine longevity. Here's your MotoSport-exclusive guide with model-specific tips for your Beta 350 RR-S.
What You Need
- Engine oil: High-quality 10W-50 (Beta recommends Liqui Moly 10W-50 or equivalent)
- Oil filter (OEM or compatible)
- Oil filter cover O-ring
- Drain bolt O-rings (engine and transmission, optional but recommended)
- Tools: 8mm and 13mm sockets, torque wrench, drain pan, gloves, rags
Step-by-Step Instructions
- Warm Up Your Bike
Start and let the bike idle for 3–5 minutes. Warm oil flows and drains far better, helping remove contaminants. - Remove Skid Plate
If equipped, use the proper size socket or wrench to remove the skid plate for easy access to the drain bolts and oil filter. - Drain Engine Oil
Position your drain pan under the engine. Using a 13mm socket, remove the engine oil drain bolt. Allow all oil to fully drain. - Remove Oil Filter
Locate the oil filter cover (typically right side of engine). Remove both 8mm bolts holding the cover.
Carefully remove the cover, oil filter, and the O-ring. Inspect the O-ring for wear and replace if needed. Leave the filter cavity open to help oil fully drain. - Drain Transmission Oil
Locate and remove the transmission drain bolt. Allow the oil to fully drain. Replace the drain bolt O-ring if available. - Install New Oil Filter
Insert the new filter into the housing. The open end should face towards the engine, solid end towards the cover.
Install a new O-ring on the cover, reinstall the cover, and torque the bolts to 10 Nm. - Install Drain Bolts
With new O-rings (if available), reinstall both drain bolts. Torque engine side to 15 Nm and transmission side to 20 Nm. - Add New Oil
Unscrew both filler caps. Pour 750 ml of 10W-50 oil into the engine side and 750 ml into the transmission side (some riders use 700–760 ml depending on riding style and local climate, but 750 ml is factory spec).
Install new o-rings on caps (recommended) and reinstall caps. - Verify Oil Level
Start the engine, let idle for 2 minutes and shut it off. Check the sight glass on the engine side: the oil should be at the center. The level may appear high before running the bike, but it settles after circulation. Check for any leaks around the drain bolts and filter cover.
Model Notes: 2021 Beta 350 RR-S
- Twin Sump Design: The engine and transmission oils are fully separate, meaning each must be changed and filled independently. This twin sump boosts reliability and clutch life.
- Oil Consumption: After initial fill, oil level may drop slightly after first ride due to oil filling filter cavity and galleries. Always re-check after your first ride and top off as needed.
- Spec Oil Quantities: While forum users sometimes report slightly different drain/fill amounts, always measure carefully and avoid overfilling. Overfilling can lead to excess crankcase pressure or frothing.
- Genuine Parts: Always use quality filters and O-rings to keep your Beta's internals safe from premature wear.
Final Tip
Dispose of used oil responsibly at your local recycling facility–never dump oil on the ground!
Make oil changes a regular part of your maintenance routine, and your Beta 350 RR-S will deliver maximum power and durability, wherever you ride.
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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.