Radiator-Flush-350ml-Silverhook-SGA14-p-Over-time-the-build-up-of-sludge-&-rust-can-impair-the-performance-of-cooling-systems-This-can-lead-to-blocked-coolant-channels-&-subsequent-overheating-&-increased-pressure-Silverhook-Radiator-Flush-effectively-clears-blockages-&-removes-any-sludge-&-rust-accumulation-May-be-used-with-all-radiator-types-&-is-harmless-to-rubber-hoses-&-gaskets-p-Silverhook-SGA14-Radiator-Flush-350ml