The type of oil means absolutely nothing (in terms of spooge), for the average rider. You could run ACME brand TCWIII, and if it's jetted right, will not 'spooge'. Make sure the air filter's been serviced, but realize that Suz & Kaw 2 strokes are for some reason, jetted way fat from the factory. You'll have to buy a handful of pilot and main jets and experiment. If you need to, go to Gorr's website and learn the right way to jet a bike. My KX500 would barely run when I picked it up.