Bobistheoilguy.com is the place to research oil.

I know what has worked for me and have had it analyzed so I will continue running Motul. I do think with what we do the oil we run and the weight is important. Some run cheap oil and change it more frequently. I will run it a full season and then have it checked by Blackstone. Some may change it midway and say they only change it to get rid of the contaminants. I have heard of guys running Mob 1 synthetic and changing it every saturday night of an event because it broke down so quickly but others run it without a problem. I feel the Motul I run doesn't break down from the heat as fast and the oil analysis support that. I'm not saying there are other oils out there that don't work well. I run Mobil 1 synthetic in my wifes Lexus and it has 251k without showing wear based on the last analysis at 247k. Rotella T6 synthetic goes in the duramax.

Joe Gibbs-I'm sure they have someone making a quality oil for them. I would always assume someone selling something to say they have something ideal for a particular application. I wouldn't run that weight oil in my race car but my understanding is Mod motors run a different weight/viscosity. Gibbs also makes an oil for the LS motors called LS30. It was recommended to English to run it. Though it is a 5/30 oil so I wouldn't put it in my race motor for a 45 minute race at Hallett.

I think anyone should monitor there cold/hot oil pressures and oil pressures during at a high rpm. That may tell you if you need to run a heavier oil or if your bearings may need to be replaced.