Exol claims new ‘API SN Plus’ specification on Optima DX1 5W-30

Exol has claimed the brand-new ‘API SN Plus’ specification on Optima DX1 5W-30 (M497), the new generation, fully synthetic passenger car engine oil formulated with premium base stocks and specialised performance additives.

The new API specification starts from 1 May, which is the earliest possible date that any manufacturer worldwide can claim this industry standard. The specification has been created in response to issues relating to Low Speed Pre-Ignition (LSPI) – or severe engine knock, which can destroy pistons and connecting rods.

Many downsized, turbocharged, petrol direct injection engines are entering the market which are placing specific demands on the engine lubricant. Next-generation motor oils need to pass an LSPI test to meet these new demands, and Optima DX1 5W-30 has been specifically formulated to reduce LSPI problems.

Major OEMs have started to introduce oil requirements specifically designed to prevent LSPI. For example, GM has recently released a specification called "dexos1™ Gen 2”, which is now required for all of its GDI engines.

The new ‘API SN Plus’ specification claimed by Exol is a reflection of the company’s commitment to developing cutting edge solutions to emerging challenges, and Optima DX1 5W-30 is also designed to meet the stringent LSPI-prevention requirements of the GM dexos1™ Gen 2 specification.