Multi-functional additive packages that contain a >15 ppm anti-static additive and/or red dye may use the VAR method. However, the other components in the additive package must be <15 ppm. If any component of a multi-functional additive package other than red dye or an anti-stat is >15 ppm, then the VAR method may not be used (§ 80.614). However, if the entire package is under 15 ppm, then the VAR method is not required.
Question and Answer was originally posted at Questions and Answers on the Clean Diesel Fuel Rules (PDF)(135 pp, 888 K, EPA420-B-06-010, July 2006, About PDF)