All, I own a Nissan 370Z that apparently needs some "special" oil from the dealer. At $12/quart for conventional oil with an ester additive added, it isn't worth it. Not to mention, Nissan only requires the oil to be certified, ester or no ester. Now, I was wonering if there are regularly available oils that contain an ester additive to help the oil stick to the VVEL valvetrain a little better. I heard Amsoil 5W-30 contains ester additives, but I would like the experts here to confirm this instead. I know group V oils are ester based, but these oils do not seem to fare well on these boards. Not to mention, they are just really expensive. In conclusion, which oils are confirmed to contain esters? Thanks! P.S. Any reference/reading material you have would be greatly appreciated. P.S.S. I tried searching the forums to no avail.
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