RAVENOL VollSynth Turbo VST SAE 5W-40 minimizes friction, wear and fuel consumption with excellent cold start characteristics. RAVENOL VollSynth Turbo VST SAE 5W-40 is a PAO (Polyalphaolefin) based, fully synthetic low friction motor oil with especially USVO® and proven CleanSynto® technology for passenger car petrol and diesel engines with and without turbo-charging and direct injection.