Looking through the owners manual for the 2012 V-Strom is says to replace the engine coolant every 7500 miles or basically every other oil change. I was just wondering what it is about this engine that degrades the coolant such that it needs to be replaced that often. I looked at the manual for my Aprilia Dorsoduro and replacing the coolant is never mentioned. I had a Mana GT and after over 46K miles don't think the coolant ever needed to be replaced. Is this normal for the V-Strom? I am a new owner and just curious. Thanks.