Wonder if they're gonna change SuperTech Conventional 5w20 and 5w30 to say Syn-blend or just keep it as Conventional on the label, I know 5w-20 and 5w-30 MAG1 conventional got bumped to being Syn-blend recently as have most 5W conventional oils in general from every manufacturer . I think the high mileage oil has been Syn-blend it just doesn't say whether it's conventional or syn-blend on the package because the High Mileage MAG1 oils are Syn Blend.