Without starting an oil thread, IMHO, besides the K&N filter you mentioned, I'd go with at least a semi synthetic oil (I like Motul), it provides a little more protection than dino, 7100, full synthetic even more but more expensive.. The 5100 Motul (semi synthetic) is likely just a little more $ than the regular dino Yamaha oil.
At the very least, motorcycle SPECIFIC oil (as mentioned above).
DO NOT USE ENERGY CONSERVING OIL....
BTW, I sent an e-mail (my original e-mail is below their response) to Motul re 300V (racing full synthetic oil) and 7100. Their response:
_________________________________________________________________
Dear Scott,
We recommand you 7100 because you can go longer miles with this product. That's what it was designed for.
We agree with you that 300V is the top product of Motul, but it is dedicated to racing. That means that the product has to be changed frequently because it's a racing application product.
Staying at your disposal,
The Motul USA staff
--------------------------------------------------------------------------------
From:
[email protected] [
[email protected]]
Sent: Thursday, February 09, 2012 4:01 AM
To: MOTULUSA
Subject: Oil question
I'm currently using Motul 5100 in my 2007 Yamaha FZ6 (US version, non Ca model). I also have a K&P (not a K&N) filter (aluminum body/ combo oil cooler, cleanable SS filter)
I'm looking to upgrade on the next oil change to either 7100 or 300v (10w40).
Obviously the 300v is a better oil, is/can the oil change interval be extended with the 300v? (The bike is NOT taken to the race track, ridden normal with occasional high speed runs.. )
Thanks ahead of time,
Scott