It will go in this weekend!!!!!

moper, I am not trying to argue with you but I dont understand, most of the dyno test ( in the magazines ) that i have read use the 5-30 oils ...and theses are fresh motors for the most part, it has been my understanding that the multi grade oils have better lubrication properties, as it was explaned to me is as follows; the molecules of the oil in the multies are smaller than in the straight weights; thus providing better lube properties as the oil can penetrate better, this was obvious at the time becuase we had oil leaks in many motors after changing over from the straight to the multie weights, this isnt just my opinion, I was a harley davidson mechanic for over 15 years ,and this came straight from the factory.... perhaps my information is out of date, but we did experiance an increase in engine life with the multie grade oils,
one more question....I have used the racing oils for many years, cam two ( made by sun oil co. ) and kendall before they sold out a couple years ago, these oils were supposed to have the additional additives for wear, is this still the case or have they also changed with the times? like i said , not trying to start something here , just want to do the best for my many motors. it has been a few years since I was at a factory school and i know how fast things can change, just trying to keep up with the times.....Thanks for the info ,sorry this is so long ,
Ron