Techron

Techron is a patented fuel additive developed by the Chevron Corporation. It contains a polyether amine-based detergent, which is purported to dissolve deposits in automotive engines and prevent them from building up. Chevron released Techron as an additive in 1981, and began including it in all of their gasoline products in 1995. It is still available as a concentrate today. 
The Chevron Cars debuted in 1995 and were used to advertise the additive.
Components.
Techron consists of five components:
Predecessor.
Techroline was the predecessor to Techron. The company claimed it could control combustion-chamber deposits in cars, as well as keep their fuel-intake systems clean.