Mexicowanderer, I believe it was one of your posts that caused me to do the sampling at El Rosario. Like you, I like to post factual information, which can be supported by proper documentation, so I needed to confirm for myself what seemed like authoratative information that rang true. I'm still going to run the samples next season, and yes, maybe I'll find a Japanese zero ppm sample.
I just wish though that Pemex would cancel or revisit its ridiculous policy of not advertising the presence of UBA (ULSD) until every station in Mexico has it. They could do a huge service to Snowbirds by identifying the stations with UBA diesel right now.
