What is a rust preventive used for? A rust preventive is used to isolate the metal from its environment (water, oxygen) thanks to a protection film. You must have JavaScript enabled to use this form. Is this useful ? Yes No Do you still need help ? Get in touch with us. Contact us Thank you for your feedback! Question Submit Main topics Oil change Synthetic oil Best oil Oil viscosity Oil near me Lubricants basics QHSE/Documentation Maintenance How Services Brake fluids Application facts Oil use View all