Weber auto is a very knowledgeable person but that may also be his greatest downfall in his dismissal of the things he has already formulated opinions on. From what i recall he is heavily in the camp of run the oem fluids only. I am a large fan on castrol import multi vehicle as im sure anyone with a non lv transmission fluid thread has seen and have had 0 issues with it. Used for Toyota type IV, honda Z1, Mercon V and dexron III applications.