Best oil for E-85?
Mobil 1 is terrible in the s2000. Even N/A you burn a lot. Mobil TBN is around a 7 I think, while amsoil is 12.1 and brad penn is 10.6. The zinc content In amsoil is 1200. Brad penn is around 1250.
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Being that you're going e85 and it being on boost (more stress) I wouldn't go anymore than 1500 miles on the oil. I'm sure the Amsoil would last much longer than that, but it's just cheap insurance to change it regularly while on e85 since e85 is very acidic






