Castrol MAGANTEC STOP-START 5W-30 A5 is suitable for use in automotive gasoline and diesel engines where the manufacturer recommends an ACEA A1/B1, A5/B5, API SN, ILSAC GF-5 or earlier specification 5W-30 lubricant Castrol MAGANTEC STOP-START 5W-30 A5 is approved for use in vehicles where a 5W-30 lubricant that Meets - Ford WSS-M2C913-B WSS-M2C913-C WSS-M2C913-D specifications are required, please refer to your owners handbook.