VOA- Valvoline VR1 10w/30 (street legal version) Blackstones Comments: Nothing unusual turned up in the this sample of virgine 10w/30 No metals were found and the sample was moisture free. Insolubles were present at a trace level but this is likely due to normal oxidation and isn't a problem. Calcium is a detergent/dispersant, while phosphorus and zine are both anti-wear additives. We think this oil should treat your engine well. Aluminum- 0 Chromium- 0 Iron- 0 Copper- 0 Lead- 0 Tin- 0 Moly- 1 Nickel- 0 Manganese-0 Silver- 0 Potassium-0 Boron- 10 Silicon- 5 Calcium- 1717 Magnesium-18 Phosph- 850 Zinc- 1007 Barium- 0 SUS Visc. 210- 61.1 cST Visc. 100- 10.54 Flashpoint- 400 Insolubles- TR TBN- didn't test Since so many people, including myself, were asking about VR1 and Brad Penn and other oils for flat tappet, performance engines; I thought I would send a test out on VR-1 and Brad Penn Grade 1. Both supposedly 'racing oils' or heavy-duty performance street oils. I had a small rant on a posting earlier this week and said I would share the details once I had time. I think this looks very similar to a SL oil, so I am dissapointed- MOSTLY because Ashland states that VR1 levels for Z & P are in the 1200ppm-1300ppm range, which the numbers don't play out. I have also been told that Blackstone is somewhat notorious for stating lower Z & P levels for oils. While I may agree to a certain extent, the SM and HDEO levels for Z & P seem to fit the API ISLAC levels specified. Even if Blackstone is tests are somewhat inacurate, I do find it had to believe it would be off some 400pmm for P and 200-300ppm for Z. However, I am no expert regarding any kind of oil analysis testing and just making comments from gut instinct. Enjoy.