ecala001
Veteran Member
does anybody know if costco diesel is good quality? I cant find their cetane rating.
Evidently, not if my and others experience has any relevance. Long ago I tried asking multiple stations in my area with no knowledge by anyone that worked there. When calling the home office they would only quote me the federal required minimum value and not the actual value. There are many threads for back then asking for this same info and most got the same responses I did IIRC. The OP is from California so the Cetane there is 50 IIRC. I wouldn't even worry about it with that alone.Surprisingly, the station manager often knows quite a bit about their product. Try asking. Just guessing, I'd think there is only maybe 4 or 5 refineries.
Fuels & Lubricants