Why do oils lose spec approval? For instance Pennzoil Platinum Euro 5w40 use to have Ferrari approval but now doesn’t. Is it simply marketing/licensing? I’m running QuakerState Euro 5w40 which I believe is the same oil. It doesn’t have Ferrari approval. Why not? I’ve been told it’s the same exact oil in a different bottle.
Btw I ordered three AMSOIL lab kits and sent one off yesterday for the the QuakerState 5w40 strait from the jug. I’ll do another at 5k and 7.5k. But will be interested in the results.
Btw I ordered three AMSOIL lab kits and sent one off yesterday for the the QuakerState 5w40 strait from the jug. I’ll do another at 5k and 7.5k. But will be interested in the results.