VOA- Brad Penn Grade 1- Racing oil, 10w/30 Blackstones Comments: This virgine sample of Brad Penn Racing Oil has a viscosity that read closer to a 5w/30 than the 10w/30 we were expecting. The viscosity is fairly close to a 10w/30 though. No water or insoluble material was present among the sample content. The oil additive levels are typical of this oil and grade. Sodium, magnesium, and calcium are detergent/despersant additives, while phosphorus and zinc serve as an anti-wear function. Nothing problematic was found in analysis. This is serviceable oil. Aluminum- 0 Chromium- 0 Iron- 0 Copper- 0 Lead- Tin- 0 Moly- 2 Nickel- 0 Manganese-0 Silver- 0 Potassium-2 Boron- 2 Silicon- 5 Sodium- 356 Calcium- 1084 Magnesium- 452 Phosph- 947 Zinc- 1113 Barium- 0 SUS Visc. 210- 58.8 cST Visc. 100- 9.87 Flashpoint- 400 TBN- not tested These bottles DO READ - "Racing Oil", the newer bottles read "High Performance Oil". Again, I had an earlier rant about flat tappet oils on another persons post earlier this week. Wanted to share the details of my rant. Many appologies for hi-jackig of that post. Anywho, marketing of oil is what I'm not please with. BP states, 1400ppm- 1500ppm is typical levels of Z & P in their 'unique cut from their towers' in P.A. I purchased this oil because of the supposed z & p levels but will buy HDEO from now on- so much cheaper and easier to obtain. Again, have heard that Blackstone labs in notorious for listing lower z & p levels but again, I don't think they could be missing 300-400ppm. Could be wrong though. Enjoy.