Ive done a search on here and read through all the threads about the smell of gas in your oil. Some people saying to block off the radiators,other say the cold temps are causing it, bad gas,rich maps ect...?? Ive done two oil changes on my 2011 and both times its like gas is pouring out of my drain holes. I called my dealer today he said I was only the second one to bring this up. I have tons of friends that have 2010/11 yz 450's and only one of them said "yes my oil smells like gas so i change my oil more often' Sorry but I spend 8k on a bike and its got a problem it should be fixed my yamaha not these band aid fixes I find on thumper talk. I run very good quality oil so I can get away with riding the track 3-5 times before changing it. Now I have to start doing it every ride or two because my oil is completely contaminated with gas?? I dont know but imo this is a problem. I had a 2010 yz 450 and it did not have this problem ran the same oil and gas I been running in the 11' So what now? Stop running Motorex oil change over to penzoil and change my oil after every 6-10 laps at the track so mentally I know my motor is being lubricated with oil not gas.. Or does Yamaha step up and and have a recall that fixes the problem.