I have a 91 Honda Accord LX that has 250K miles on it. As I accelerate I see white smoke from the exhaust, but none at normal speeds. The oil is not milky and the radiator fluid is not discolored or low. The car runs smooth no sputtering or missing at all. I replaced the plugs and changed the oil, I also added some "sea foam" to the engine oil and gas tank. Car ran even quieter but still see the white smoke every time I hit the gas hard and it disappears when normal driving. Is there any other thing I should look for i.e. change from regular unleaded to premium?
Thanks
Brett