I was reading on our favorite oil to bash. Sorry RP fans believe it or not RP is not this site's favorite oil to bash. This title belongs to Synlube. I guess Synlube can update their website to say that their oils should be used in the latest API recommendations but can not update their web software from 1992.
http://www.synlube.com/prod01.htm
http://www.synlube.com/prod01.htm