Myth Busters (V.Mike38) My own version of Myth Busters! To set the tone. I just changed the engine oil and front tire on my DR650SE and the following popped into my cranium while putting the wheel back on. The bike is now on it’s 7th front tire and 5th rear (I’m hard on the front brake I guess) and has rolled over 35,000 miles. Myth #1. WD-40 is not a chain lube. The above bike has had nothing but WD-40 used on the chain. Remember, 35K miles, 7 years old. Original chain. Around mid way on the adjuster. Looks to me like WD-40 is a perfectly good chain lube. Myth #2. WD-40 eats o-rings. See above. Myth #3. Automotive oil is not an adequate motorcycle oil. I have used Valvolene Conventional 10w40 car oil exclusively since the bike was new. Runs great, doesn’t burn a drop. Have only adjusted the valves once. Original clutch plates that had never been adjusted. Myth #4. Sea Foam is snake oil. Two to three times a year I dump 2 ounces of Sea Foam into a full tank on this bike. Usually try to do it just before I plan a 100+ mile day. I have never, I repeat, NEVER removed the carb on this bike to clean it. 35K miles and 7 years and have never cleaned the carb. Myth #5. You have to install a new inner tube with a new tire. This bike has the original inner tubes on it. Comments are welcome!