Bullfrog® metal-seeking VpCIs seal and protect metals with a self-repairing “molecular umbrella.” The VpCIs migrate throughout crankcase oil, forming an invisible molecular umbrella of electrochemical inhibitors that seals internal metal surfaces against the air and moisture that cause rust & corrosion both above and below the oil level. There’s no effect on engine or oil performance, and no chemical build-up – ever. Protection lasts until oil is changed.
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Rust Blocker System