this whole argument is absurd ...bottom line is that while you may see a gain its only because it may have done some cleaning ....acetone doesnt have the same properties as far as combusting as pump gas ....while the mixing of the 2 can be an argument that will help you id love to see that ....but if anything logic would say that it would raise your flash point thus changing your timming and while it was allready said that its not good for prolonged us ....why mess with your ignition to run it for a small amount time....the time wasted in this post i could have made an extra 20$ ........a good fuel cleaner like the ones you buy are jet fuel....bassically a cleaner verson od deisel.....thats why it doesn't hurt your fuel system ...also that stuff is not to be used all the time ....just face it guys you are driving a square box on tires ...lets stop trying to make it a hybrid and get 35MPG ...why chance runing some parts to gain 2 MPG <img src="/forums/images/graemlins/shame.gif" alt="" />