Originally Posted By: Corvette Owner
I recently asked a question on their website and got an answer.
I asked if their Mobil 1 EP was certified to the GM "Corvette" standard, they said it was, although it is not listed on GM's website or on the bottle.
For M1 EP 5w30 they don't list the Ford, GM, or Chrysler certs on the Mobil 1 website, but they are listed on the bottle (but the GM "Corvette" spec is not listed on the bottle). Same on 1 quart and 5 quart jug.