Chevron's info bulletin

Diesel - Chevron's info bulletin
Chevron's diesel technical review - good basic diesel fuel information
http://www.chevron.com/prodserv/fuels/bulletin/diesel/

See also http://www.chevron.com/products/prodserv/fuels/diesel/documents/diesel_fuels_tr.pdf for a good background read on the whole diesel product chain.

Diesel specifications from Chevron's refineries:
Western Division: http://www.chevron.com/products/prodserv/fuels/diesel/WR_Diesel_Exchange.shtm

Eastern Division: http://www.chevron.com/products/prodserv/fuels/diesel/ER_Diesel_Exchange.shtm