I have no data, but I have never trusted the engine oil and transmission fluids that come stock with new vehicles. I have always changed the fluids on the two new vehicles I have purchased (both Isuzu's)the same day I drove them off the lot. I think this came about from being a bike mechanic in college and knowing the cheap a$$ grease the bicycle companies use when assembling hubs, bottom brackets and headsets. I also have no doubt that the worlds oil companies will <img src="/forums/images/graemlins/bird.gif" alt="" /> people any chance they get.