Here we show what happens when one mixes different two stroke oils together . It forms a sludge and clots up either quickly or over a process of time and this will cause your PWC to not get sufficient Two Stroke Oil or Not At All . There are Synthetic , Semi Synthetic and Mineral Two Stroke Oils on The Market ( 2T ) These Often Do Not Mix Well With Each Other and The Rule Of Thumb Here is : When there is Just a Little Bit Left in The Oil Tank Then One May Change Brands . But Stick To One Type and Stay Main Stream With what Is Most Used And Available in Your Market Area . Thank You For Watching And Remember To Like Comment and Subscribe 👍 And Remember always To Dispose of Your Oils Responsibly .