I'm a qaud enthusiast and have just purchased a 4 stroke single cylinder Suzuki. I've heard that there can be clutch problems if you use synthetic oils in these machines. Any truth to this

Back in the late 90's I had a Ninja that I tried synthetic for...it didn't shift right. It was too slick for the clutch pack. I am sure that there must be something from the dealer that you could get if you want synthetic.