Just out of curiosity, looked at some prices and Suzuki green and blue coolants are arround £12-13 per Litre. That's very expensive. I've heard about a lot of coolants that can be used on our bikes, as long as they are aluminium engine/radiator frendly. I've heard about excellent coolant sold at Honda car dealers, called "Coolant Type 2", cheap and good, with same caracteristics as Suzuki blue coolant. I don't know what to do, 2 years service is closing in and as I'm going to do it myself I have to choose the coolant and not sure it HAS TO BE Suzuki expensive one.