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For those of you who think the judder isn't a problem and doesn't cause transmission failures. You should look at the oil analysis sheets that those of us have done. What is happening is that the fluid viscosity levels are dropping quickly. Even after a 3x change they can drop quickly. Even with a better base stock fluid like AMSOIL it seems to drop quickly. A good change interval will keep the judder at bay and also keep your viscosity levels up high enough to PREVENT the judder problem (which is a side effect of worn out fluid). Sure, Honda may say that it won't cause problems (and sure, changing the fluid helps of course) but long term I think we are seeing the failures occurring in higher mileages now that the Ridgeline has been in operation for a while. Back when these were new there were early premature trans failures but they could have been for low quality parts issues. With mileage on them now the thing we will see is mileage failures from use and time. Keeping up on the fluid is now more important than ever. Keep the viscosity levels up there and it'll protect the moving parts in the transmissions and will prevent metal on metal wear. That's one of it's important purposes. Reduced long term wear.