What is the stuff they put on a chain when you buy a new bike?

[PachmanP]

if by option 2 you mean wet the chain with skim milk then good, casuse thats what ive been doing since i bought the bike.

Not this argument again!  It's obvious to anyone who's studied it at all that you need at least a 2% for there to be any benefit.  The fat is what lubricates.

Here is a pretty thorough look at what does and does not effect o-rings.  I don't see at a quick glance if he ever updated with long term results though.  I kinda think the wd-40 discussion is in the same boat as synthetic and dino oil or 87 vs 91 octane and will never be resolved....

[TheDrunknmonky]

87 vs. 91 or 93 octane..... i've been wondering what would happen if i tried to run premium in my gs.... probably blow the seals?

[mister]

I run 95 octane and have no problems. I get better mileage from BP gas than from Shell. Haven't tried Caltex gas yet to see how their's is.

Michael

[BaltimoreGS]

Higher octane gas won't hurt anything but really isn't necessary in a low compression engine like a GS unless you are having pre-detonation (pinging) issues.

-Jessie