The Honda TRX 420 is a model of ATV (All-Terrain Vehicle). The recommended engine oil for the Honda TRX 420 depends on the specific model year and the type of engine installed.
For most Honda TRX 420 models, including the Rancher and Foreman variants, Honda recommends using a 4-stroke engine oil that meets the JASO T 903 MA or MA2 specification. Additionally, the oil should have a viscosity grade of 10W-40.
It's important to consult the owner's manual for your specific Honda TRX 420 model to confirm the recommended engine oil specifications, as they may vary slightly depending on the year of manufacture and any specific requirements outlined by Honda.
Following the manufacturer's recommendations for the type and viscosity of engine oil helps ensure optimal performance, protection, and longevity of your Honda TRX 420 ATV. If you are unsure about the specific oil requirements or have any questions, it's best to consult an authorized Honda dealership or refer to the owner's manual for accurate information.