For the most curcumin, be sure to use turmeric rather curry powderâa study analyzing curcumin content in 28 spice products described as turmeric or curry powders found that pure turmeric powder had the highest concentration of curcumin, averaging 3.14% by weight.
There is another type of octane rating, called Motor Octane Number (MON), or the aviation lean octane rating, which is a better measure of how the fuel behaves when under load as it is done at 900 rpm instead of the 600 rpm of the RON<ref>http://www.texacoursa.com/glossary/r.html</ref><ref>http://www.texacoursa.com/glossary/m.html</ref>.
Owner's manual: Unleaded premium gasoline, pump octane number 91 or higher. Use of lower octane gasoline can cause occasional metallic knocking noise in the engine and will result in decreased engine performance. Use of gasoline with a pump octane less than 87 can lead to engine damage.. 2013 Chevrolet Volt.