Lead additive in the fuel

In older petrol engines that require leaded fuel, wear can occur on the cylinder head due to a lack of lead in the fuel. This jeopardizes optimum compression and, in the worst case, can result in engine damage. There is also an increased risk of valve wear if older vehicles do not have hardened valve seats. 

To counteract these problems, we recommend adding our Lead Substitute. It lubricates and protects valve seat rings, keeping valve wear as low as possible in older vehicles without hardened valve seats.