If this is the original fluid then it's way past due. I would have it replaced fully by a specialist shop with an inline fluid change machine hooked up to the cooler lines. This replaces 99% of the fuid and it's not a power flush that Kazoo2U warned you of. The cheapest way would be the triple change from Kazoo2U's post that you can do yourself. Get original Honda fluid, don't mess with multi-vehicle ones.