Mobil 1 Full Synthetic 0W-40 Engine Oil 5L Mobil 1 0W-40 is made with a proprietary blend of ultra high performance synthetic base stocks fortified with a precisely balanced component system. As pioneers in the engine oil market since the 70's, Mobil 1 remains a world leading synthetic motor oil brand, delivering on almost 50 years of real-world testing, refinement and engineering. With Formula One being the main performance testing ground for Mobil 1 Oil since 1978 and with Red Bull Racing as its technology partner, Mobil 1 have used their real-world testing results and trackside lab to analyse fluid performance and refine their oil compounds to perform just as well on the street in your road car as they do in some of the most highly strung racing applications in the world. Just some of the other motorsport partners that Mobil 1 work with include Bentley Motorsport, Porsche Motorsport, Walkinshaw Andretti United (Australian Supercars Championship) and Wall Racing (Australian TCR Series). When world leading manufacturers demand the most from their performance engines, they look to Mobil 1 for their engine oil. If you specify the best in on-road performance, longevity and service life for your car, Mobil 1 is definitely one to consider. Mobil 1's anti-wear properties and tri-synthetic temperature resistant compounds are unsurpassed. Mobil 1 is formulated using the highest grade base oil stocks and is then combined with an array of proprietary additive packages that offer far greater protection for your engine than other synthetic motor oils. Don't settle for 'good enough' when you could have Mobil 1. Next time you're servicing your car, make sure you stock up on Mobil 1 motor oil to keep your engine running smoothly and reliably.