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5-speed gear oil

15929 Views 17 Replies 13 Participants Last post by  fitfors2k
Has anyone used amsoil 75w90 gear oil in the 5-speed tranny? What is
different or special about Honda manual transmission oil? :D I understand the amsoil gear oil increases fuel mileage.
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so what is Hondas viscosity? I presumed it was like 10-30 or something close as they said you can use motor oil as a substitute (just needs more changes). That's what I have been using
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