Evapo-Rust
is a water-based product that is specially developed to remove rust and
which do not contain solvents to dissolve oils and grease.
Therefore
grease, engine oil and undercarriage treatment products must be removed before
treatment can begin. It is also recommended to wash off dirt and grime
before derusting. By avoiding that the liquid becomes contaminated with oil and dirt, you
will get a better use of the liquid.
If there there is a thick layer of rust that
can be knocked off, it is also recommended to do so before putting the
items in the liquid. This prevents the liquid to quickly become saturated
with dissolved rust, so you get a longer life of the fluid.