Originally Posted by bobistheoilguy.com

Food for thought: A mechanical engineering professor at Cal Tech did an accurate study a few years back on how hard on oils bikes with shared transmission/crank systems are compared to cars. Basically he found that bikes with shared transmission lube are a minimum of FOUR times harder on oil (shearing in the transmission being the problem) than a car is. This was a well done, controlled test at a major university. Based on that, running your oil 5K in a bike is like putting 20K on the same oil in a car. I really doubt that you would want to do that. Shorter change intervals are definitely advised in a bike. When you compare the price of your new bike to a few quarts of oil, it is raving false economy to try to extend oil changes. "Penny wise and Pound foolish."....is an understatement, especially if you want to keep the bike long term.

...also, from what I have personally seen on oil analysis I sent in on my bikes, you can see that shearing to a lower grade IS common and not specific to one brand.

Bottomline: You would be well advised to shorten your oil change
interval, especially with a 10W-40 Dino oil.

Originally Posted by Roxtar

started looking around more after you all talked down on icon helmets... opinions on the scorpion exo 1100?
since my bike is more upright, i'm thinking it would be good. my concern here is whether the sun-shade will interfere with my glasses.

http://www.amazon.com/SCORPION-STREE...2109046&sr=8-5