[SlowGT]

Here's some sites that should help you out. Just copy and paste them in the address bar if they don't showup as clickable links.



http://www.motoroilbible.com/index.html



http://api-ec.api.org/about/index.cf...02003002000000


http://www.performanceoiltechnology....ubrication.htm



http://www.vtr.org/maintain/oil-overview.html



http://www.howstuffworks.com/question164.htm



http://api-ep.api.org/filelibrary/ACF28.pdf