[Reed Granrt]

If you ant to get a definite argument started amongst racer's, just ask what is the best oil to use and then sit back and listen to all the different stories.
I guess,I, like most people have tried every oil mixture and additive that has showed up on the market. At one point, I prided myself at being an excellent mixer of all those additives. Man I became a grade A mixer. But in the past few years and after some stinging words from Lake Speed Jr, I have come to realize I am not a Chemist. I have learned to stay away from "moly" additives, either added or in the oil to begin with. "Moly will indeed blind most all oil filters. The finer the mesh, the more the blind. Also, it may or may not go into suspension with todays oils. I have also found it to separate out from the base oil once not in motion. Once separated out, very hard to get it back into suspension. I, like many on this site, have come to understand , that we must start a new engine on the best formulation of break in oil you can get. Again, I stay away from additives as mentioned earlier. Break in oil must be full of zinc anti-wear and anti-scuff additives so as to promote good ring seal and give protection for items that are rubbing, such as lifters. Break in oil should never have friction modifiers in it. This will indeed inhibit ring seal. A good break in oil will have different burn off rates of the zinc too provide needed protection for lifters and bearings and then burn off slowly so that rings can seal--and this is a definite hard line to keep within boundaries. Once your breakin oil has performed its job and you deem it time to go to racing oils and or to high performance oils, then I look for oil that has super friction modifiers to reduce friction and heat. Of course a good oil will have many more additives to perform certain task. You have oils that make you go fast but you give up some reliability and you have oils that increases reliability and gives up speed. Take your pick. If you build an engine with the notorious .001 per inch specs, then most of us run too thin an oil for reliability. Again our decision to run on kill or not. One thing I am certain of is that I never put moly of any type on lifters and or cams. Most cam companies have begun to move away from this so as not to have moly "clash". Moly seems to clash with many oil additives in todays oil.
Hey my two cents worth and not meaning to disrupt any one's thoughts.
reed