Since last few months I have been thinking of changing the coolant on my Duke. It was running hot and really needed something better. I have only recently changed to LM RAF12 and the results were far better than what I expected. In city traffic, the Duke now runs a lot cooler than before and the radiator fan does not run as frequently as it used to before changing the coolant. Even in traffic jams, the radiator fan kicks in far less than before. Highway runs have become very smooth as the engine now runs at much lower temperatures than before. I am super happy with the RAF12 coolant. So far, like all other LM products, this has proved its worth. Thanks to LRL for bringing such great products within our reaches!