How long does Enviro-Save remain in the engine before changing my oil?
The Enviro-Save resin forms within 1,000 miles (1,600 km). This time is needed for the Enviro-Save resin to get burnished into the asperity structure of the metal. At this point, you should check your oil. If the Enviro-Save cleaning complex has removed deposits from your engine, the oil will be dirty and should be changed to prevent stress on your filtering system. Any resin that is unused will come out with the dirty oil. Enviro-Save will not change tolerances or replace metal that had been worn away. Enviro Save will not affect the fluid or change the characteristics of any fluid.
