UKPIA represents the oil refining and marketing companies operating in the UK which also own approximately 4,000 of the UK’s 12,200 service stations.
Lead has been used as an additive in petrol since the early 1920’s. One of its functions is to prevent excessive wear from metal to metal contact in that part of the engine where combustion takes place, a condition known as valve seat recession. Many cars manufactured before 1 October 1990 need this protection, so LRP contains an additive that provides similar protection to lead in normal driving conditions.
Bottled additives for use with unleaded petrol are designed to provide protection for valve seats. They are simple to use and comprise a two-part sealed container that assists in measuring the correct dosage in a safe manner.
Unleaded petrol was introduced into the UK in 1986 as a precursor to the introduction of cars with 3 way exhaust catalysts which are damaged by lead.