Thread: Should I trust an Oiler?

Originally Posted by glasscat

My 2007 hpdi manual states to never premix oil. Better to do more research on Yamaha.

of course it does, with an auto oiler if you do you'll have way too much oil going to the motor. Disconnect the oiler and you'd better mix oil and gas.

Some Yamahas direct oil into crankcase and use special designed rings for upper oiling. I still say it is better to research, than just assume premix is sufficient.

I trust my oiler on my Mercury 115. Alarm test at every key start confirms buzzer.
Not to hijack, but I add a small amount of TCW3 2 Stroke Oil directly to my fuel to help with lube and conditioning of the fuel tank and system in addition to reducing the harm of ethanol in the gas. I also do that for my motorcycle and lawn equipment, all at 1 ounce of TCW3 oil to every 5 gallons of gas, somewhere around a 640 to 1 mix. Been doing this for a couple of years now.