Hey gang, What's the popular consensus on using M1 Syn 0w-40 in a 95.5 S6 2.2L AAN motor during the summer? 15w-50 is getting harder and harder to find, since they switched that weight to the 'extended performance' label. 0-40 shouldnt be too thin I don't think but I remember my old MC'ed 5k throwing fits during hot weather when 10-30 was used. Thanks! Rokas