I could be wrong, but it seems like all the newer cars nowadays require synthetic oil. All the newer Honda and Toyota vehicles seem to run on 0w20 and my brother-in-law's Jetta requires 5w40. I have yet to see any conventional oil in that viscosity range. Maybe it's just the imports?
I haven't owned a domestic vehicle since the 80's, so I don't know too much about what they run. I've heard a lot about GM's vehicles requiring "Dexos" certification (don't really know what that means) on this forum, but even all of those have been synthetics(until the recent post of a Dexos certified Pennzoil synthetic blend?).
I haven't owned a domestic vehicle since the 80's, so I don't know too much about what they run. I've heard a lot about GM's vehicles requiring "Dexos" certification (don't really know what that means) on this forum, but even all of those have been synthetics(until the recent post of a Dexos certified Pennzoil synthetic blend?).