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Hi, my car just hit the 40k and its time for me to change the gearbox oil. The manual says to us honda manual tanny fluid but i don't want to use that. Could anybody tell me which oil viscosity to use? And also, there is that thing, GL4, GL5, etc... Which one to use for our gearbox?
Are you talking about your manual tranny? If so it's probably 90 weight gear oil available at any auto parts store. You could also use Royal Purple synthetic gear oil. I'm sure your manual says what weight gear oil to use. I'm nowhere near mine so just pull yours out and read it.