As most know, heat is a destroyer of ATF and the ultimately the transmission. Full Synthetic products have been proven to be more resistant to heat and give better protection. If you live in a region known for really hot summers, regardless of your milage, I would recommend an ATF drain and fill every other oil change if you use DW-1. DW-1 is not full synthetic and can loose it's ability to protect in this extreme environment. Hence this discussion about MaxLife and other Full Synthetic alternatives.I plan to change the fluid every 30k miles like I have in my CRV (2013 MY).
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I wouldn't think twice changing my 5-speed CRV ATF to MaxLife. We've owned 2 of them.