Originally Posted by igom3
Centine rating by company
BP (Amoco branded), 51;
Countrymark fuels Diesel-R, 50
Chevron, 49; or 51 with Techron D labels in select markets
ConocoPhillips through the 76 stations (California) 47-53
BP (Powerblend 47, otherwise 40-42)
Sunoco Gold, 45 (often +1-5) Sunoco regular is usually 40.
Holiday Stations, 40-43
HESS, 40-42, can be up to 45.
Husky, 40 + diesel Max additives raise another 1-3 from there (41-45 max)
Flying J, 40
These rating are from Canada I believe, if they are the ones from the TDI forums. It varies from market to market.
In my state minimum cetane is 40 and it is not required that the actual rating be posted on pump. I'm sure some are considerably higher than others but, there is no good way of knowing.