Originally posted by kenora:<br /> Hey!....this brings up an interesting thought....a friend of mine has been mixing shell 10w30 regular old motor oil in with his gas at a 50/1 ratio for decades....refuses to believe that we need tcw3 or any special two stroke oil at all....I know his engines have lasted and lasted....he even bought a new(er) Johnson 15 hp that he runs the same stuff in....is he crazy?...is he ruining his motors/ .... or is he just smarter than the rest of us!? :><br /><br />If by "smarter" it means he thinks he's actually saving money by using 10w30, I can't believe it's a meaningful savings from cheap Wally World gallon jugs of TCW3 oil. Unless he's using the absolutely cheapest 10w30 and is saving 75 cents a quart. He's probably not crazy, but seems kind of stupid, penny wise and pound foolish.<br /><br />Tim