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>.
Octane ratings. 1  Understanding octane ratings. 2  Octane rating is a measure of a fuel's ability to resist âknockâ. 3  The recommended octane rating for most vehicles is usually octane 87, but be sure to check your vehicle ownerâs manual.  In general, the octane needs of a vehicle align with the manufacturerâs recommendation.