Ok I know there are a bunch of threads out there that discuss synthetic oil but I've got a problem on my hands. After a good 300 miles on my bike I decided to go online and buy some Opti-2 to see what all the fuss was about. Before I switched I was using a 24:1 ratio and after I bought the Opti I guess it was mixed somewhere in the neighborhood of about 100:1 like they say. Now here's the problem. I've gone through 2 full tanks with the Opti and keep running into a really weird problem. I start up the bike, let it warm up for about 5 minutes and then go for a ride. It goes good but sometimes while riding the engine cuts out all power for about 1 or 2 seconds. It's not bogging or anything it just cuts out all power then goes right back up and tugs me forward. This is really weird and worries me. Has anyone used Opti-2 or any synthetic oil and has encountered this problem?