The 5W20 & 5W30 have been a blend for 2-3 years, at least, since the move to SN. I had several arguments with VIOC morons who were insisting on putting 5W20 Maxlife in the company Transit "because it requires a synthetic blend"-even after I showed them THEIR OWN COMPANY'S PDS they still didn't believe me! It'll be interesting to see if the 10W30 is a blend now, it wasn't before, and NO VWB is Dexos 1 Gen 2, either-so they're some of the rare oils that aren't both SN+ & D1G2.