What is Indolene?

Answer 1

Indolene is a form of gasoline used in testing because it is standardized and has no additives.

Indolene gasoline is used for the US Federal Test Procedure (FTP) to certify vehicles for emissions rather than commercial gasoline. Indolene fuel used in certification typically has a sulfur content below 50 parts per million (ppm). On the other hand, commercial gasoline sulfur content ranges between 30 and 1000 ppm throughout the US with an average of about 300+/-50 ppm.

Indolene gasoline results in reproducible tailpipe emissions from a test vehicle. Commercial gasoline results in a wide range of emissions. The emissions differences are attributable largely to the disparity in gasoline sulfur content.

source:

http://www.meca.org/galleries/default-file/sulfur.pdf

http://www.futurefueltechnologies.com/?page_id=42