The formulas invented by John Bishop have been subject to the sternest and most comprehensive tests conceived by the motor industry for over 30 years.
In this period, it has been noted that these unique formulas have far-exceeded the expectations of even Bishop himself, achieving unrivalled levels of lubrication, performance and protection.

These tests have found our treatments to be leading the way in engine protection, as well as reducing fuel consumption and enhancing engine performance.
Below are details of just some of the tests we have been part of.