**Wynn’s\u00ae Radiator Stop Leak is designed to protect against coolant leaks by preventing most leaks from the radiator, heater core, engine block core plugs, as well as leaks from the cylinder head.
\nWynn’s\u00ae Radiator Stop Leak is added to new engine coolant after a complete cooling system replacement or to the cooling system between regular maintenance intervals.**
\n**Features & Benefits:**
\n\u2714 Prevents common radiator and cooling system leaks
\n\u2714 Protects against coolant loss
\n\u2714 Does not clog the radiator core
\n\u2714 Compatible with all standard, extended-life, and hybrid coolants
\n\u2714 Undyed to be compatible with any color antifreeze
\n**Uses:**
\nAdd to coolant as needed or after a radiator fluid change
\n**Directions for Use:**
\nAdd product when the engine is warm.
\nRemove radiator cap, shake well, then pour contents of the bottle into the cooling system.
\n**Note:**
\nNot intended for mechanical repairs
\nNever add to a radiator flush machine<\/p>\n","protected":false},"excerpt":{"rendered":"
**Wynn’s\u00ae Radiator Stop Leak is designed to protect against coolant leaks by preventing most leaks from the radiator, heater core, engine block core plugs, as well as leaks from the cylinder head. Wynn’s\u00ae Radiator Stop Leak is added to new engine coolant after a complete cooling system replacement or to the cooling system between regular […]<\/p>\n","protected":false},"featured_media":285795,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"pmpro_default_level":""},"product_brand":[],"product_cat":[16595,16546],"product_tag":[],"giftcard-category":[],"offer_category":[],"class_list":{"0":"post-295074","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-cooling-system-leak-sealant","7":"product_cat-extras","8":"pmpro-has-access","10":"first","11":"instock","12":"taxable","13":"shipping-taxable","14":"purchasable","15":"product-type-simple"},"acf":{"bundle_product_items":[265336,265856,265639]},"yoast_head":"\n