basshunter112
New member
I have a sears 4hp motor that i recently just purchased. I am not sure what type of oil to mix with the gas. The man at the local marina sold me mercury premium plus 2cycle oil. He told me to mix it 50:1 but the engine says 100:1. the model number is 574-59660. I am not sure if i should use this oil blend or a different kind. the oil i have says its tc-w3 certified.