I addition to my recently purchased '04 DFI 250 I also have a 98' 115 hp FastStrike. I was given a gallon of Amsoil HP 2 stroke oil and have added enough for 12 gal of gas to my boat. I have not run the boat yet, just have it ready for scalloping later in the week. I was told today by someone who claims to an outboard tech that running synthetic in my motor will not work causing typical non lubing problems. Any info on if he is factual or just full of crap?