I only have a manual for an 07 YZF, so i called my dealer and they said the 07 WR250 takes 1.2L of coolant (not including coolant bottle). I couldnt download an online manual because it wouldnt work for some reason. I am currently flushing out the cooling system so i can repair a leak and put in Engine Ice, and when i put in 1.2L of a mixture of distilled white vinegar and distilled water, only about 0.9 L filled it up, which is what the YZ manual says. Same thing happened when i put in only distilled water to flush out the vinegar. I am filling it up through the radiator cap only - is there something else i should be filling up (not the catch bottle)? So how much coolant does the 2007 WR250 take?