1. Remove oil, grease, paint and loose scale.
2. Apply Ranex & allow to dry completely in order to penetrate deep rust & to leave surface in a suitable condition for painting with an oil based primer, as Ranex chemically destroys rust it is not necessary to use rust inhibiting paints. Zinc rich paints are not recommended.
3. Apply Ranex to the rust effected areas only, wipe off any excess on surrounding metal or paintwork with a damp cloth.

Note: Ranex Rustbuster will convert the rust however it will not prevent it from re-occuring. Treated surfaces left uncoated may experience further rusting.