15 Nov 2026
The voice of the independent garage sector

Fix leaks fast

SEALit Coolant Leak Repair is designed to permanent seal leaking engine blocks, head gaskets, freeze plugs, cylinder heads, radiators and hoses and Holts is so confident of its abilities it provides a money-back guarantee for the lifetime of the engine. It can be used on all cars and is compatible with all antifreezes – you simply pour the liquid directly into the cooling system to create a lasting seal.