Choosing the best engine oil for your Royal Enfield Thunderbird 350 involves considering a few factors such as the manufacturer's recommendations, climate conditions, and personal preferences. Royal Enfield generally recommends using 15W50-grade engine oil for the Thunderbird 350, but it's always a good idea to consult the owner's manual or contact an authorized Royal Enfield service center for the most accurate and up-to-date information.
Additionally, you may want to consider the following factors when selecting engine oil:
API (American Petroleum Institute) Certification: Look for engine oils with API certifications such as API SN, API SL, or API SJ. These certifications indicate that the oil meets certain quality standards.
Viscosity: The recommended viscosity grade for the Thunderbird 350 is 15W50, but you can adjust it slightly based on your climate conditions. For hotter climates, you may consider a slightly higher viscosity, while colder climates may require a lower viscosity.
Brand and Quality: Opt for reputable brands that specialize in motorcycle engine oils. They often have formulations designed specifically for the requirements of motorcycles.
Synthetic vs. Mineral: Synthetic oils generally offer better performance and protection, especially in extreme conditions, but they are usually more expensive. Mineral oils can still provide sufficient lubrication but may require more frequent oil changes.
It's always a good idea to consult with experts, such as authorized Royal Enfield service centers or experienced mechanics, who can provide specific recommendations based on your bike's needs and the local climate conditions. They can take into account factors like your riding style, maintenance practices, and any modifications to the motorcycle when suggesting the best engine oil for your Thunderbird 350.