alright I have always ran BPR synthetic in my 96 xp, but I am looking for a cheaper alternative. On another site someone mentioned using Mystik JT-4. A case of it is around 100$ for 4 gallons. Obviously I would drain my oil tank before adding. But since this is a synthetic as well, will it be fine? How about the quicksilver synthetic PWC oil. Are there any performance issues with running a different type of oil?