Amsoil 5w30. Manufacture recommends changing amsoil every 7500 miles I do it at 5k. HOWEVER at 5k miles, what sold me was the oil isn't even broke down yet, it looks like your draining fresh oil.
I think tho that amsoil, royal purple are all comparable. Oh and I run lucasoil in the rear end and ps and amsoil in the tranny as well.
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88 mk3 supra targa n/a auto, fresh paint, mostly original otherwise with 186k miles!!!
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