[QUOTE=Cliffy777] i met a guy once (at an oil change place) who told me his car lost it's oil (freeze plug popped out) and he drove 50 miles and didn't know it because he had PTTF in the motor. I dunno. maybe i will just forget it and drive.[/QUOTE
For what it's worth, if you lost a freeze plug, you'll loose your anti-freeze, not your oil. But to your question, any proper motorcycle rated oil made today, synthetic or dino, is all you need to keep your bike in excellent condition. You do not want to use any oil marked EC...not good for the bike. My local BMW dealer recommends regular oil changes using dino oils...the only really advantage to synthetics over dino is it's life span, which means less changes...but it cost almost twice as much so the only financial advantage is the cost of 1/2 an oil filter , or about $ 6.50......me, I change oil and filter every 3,000 and use Spectro 20-50 year round. And if I am on a trip and need to top off, Walmart and a qt of Castrol does the trick. and in over 100,000 miles, I ve never had a problem.