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 Maintenance How Services Brake fluids Application facts Oil use Oil change Synthetic oil Best oil Oil viscosity Oil near me Lubricants basics QHSE/Documentation View all