New to me GTX 4tec. Prior owner stated noticed it had lost a reservoir of coolant the last time he rode it 2 years ago (hasn't used it since) and IM wondering if they had issues other than a head gasket where they develop a leak. IM new to the 4 stoke machines so I thought I would reach out here for ideas before i tear into it. Pulled the dipstick and the oil is clean so IM guessing it didn't leak into the base. IM going to remove the spark plugs and check to see if they have been steam cleaned at all with a leak. Any other advice would be great. Thanks guys.