It is an oil based product that cleans, protects and lubricates. Click here for a technical description. Ultrafilm is a non toxic biodegradable product. It is classified as a non-hazardous product. There is certainly less corrosion from fresh water use but some fresh water bodies contain high levels of corrosive sulphites and sulphates.
Calcification occurs causing reduced cooling efficiency.
The hotter an engine is running the greater the rate of corrosion. With inboard engines, exhaust gases trapped in the manifold region also cause problems. Ultrafilm's metal protection properties work equally well when sprayed on the outside of an engine. It is specifically designed for marine alloys but will work just as well on other metals. New uses are regularly being discovered and reported to us by Ultrafilm users.