Re: What Oil Wieght & Type?
I run 10/40 - Just regular blend. I think it's better to change more often. Then use the good stuff longer. Everyone is different. It's my 2cents. I also run regular gas as well. No need to run premimum. If I'm not mistaken, the manual calls for 10/40.
I've run into a few people who have that mindset--use cheap dino oil and change it more often, instead of using synthetic and leaving it in longer.
That just plain doesn't make sense, unless you like abusing your engine, throwing your money away, and wasting time in the garage.
Synthetic oil protects better than dino oil. Period. It doesn't matter whether the synthetic is fresh or has 10,000 miles on it--it protects better than dino oil even if the dino oil came from a bottle fresh off the delivery truck. So using dino oil simply means you have to change it more often (it loses its additives and shears much more quickly than synthetic oil) and you're putting more wear and tear on your engine than you would be if you used synthetic.
Don't get me wrong, I don't really care what anyone runs in their bike. Hell, run it on vegetable oil for all I care. But it makes me want to bang my head on the wall when people think that using dino oil and changing it often is somehow comparable (or, God forbid, better) than using synthetic oil.
For the record, I use Mobil1 15W50 car oil, the 15K mile formula, in all of my bikes. My change intervals are around 7500 miles, although I'll go as high as 10K miles. I changed my GSX-R1000's oil after 7500 miles and sent in a sample to Blackstone Labs for testing. The oil came back with a little bit high aluminum count (momentary drops in oil pressure after wheelies caused that--rectified by raising the oil level a little) and a bit high on hydrocarbons (the bike likes to idle too low when cold and I think that the less-than-efficient combustion has resulted in a little of the unburned gas making it into the oil) but the oil still had plenty of additives left and the lab said that it could have been used for quite a bit longer.