Re: Fuel and Lube Question

[David Stanton]

I would use more oil in that KF5. I believe the manufacturer’s spec was 24 to 1. I’d go no higher ratio than 20 or 25 to 1. Yes your spark plugs are clean, but are your rings and bearings getting enough oil? You won’t know until they self destruct. So you may have to clean your spark plugs every 100 hours or so – that beats replacing bearings and rings. With the Clinton, and today’s TCW3 oils, I would go 20 to 1, but no lighter on the oil. Note that 20 to 1 is easy to measure too, because it’s a quart or liter of oil in a 5 gallon can of gas.
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I’m sure you will get a lot more opinions on oil mix here. I am not a member of the "run as little oil as you can to save money, reduce smoke, and keep spark plugs clean" club for the reasons mentioned above. Oil is cheap insurance.
Dave