i am new to this board and i have been considering switching to synthetic oil for a while now i have a 1997 honda civic coupe ex with the 1.6l di6y8 i currently use mobil 7500 drive clean i believe its called and was wanting to switch to syntheic to prolong the life of my engine. my car has never been beat it has 80,000 miles i use 5w30 what honda recomends and its not to hot or cold here in ohio. i use a supertech oil filter only because i was comparing it to fram and it claims to be more effiecnt. so i have heard that once you swithc to synthetic you cant switch back, not that i would want to but is this true. Do you have to do anything special when swithching to synthetic? also would using a genuine honda filter be better? i want the best fuel efficiency and what will help prolong the life of my engine. im looking for the best filter/ oil setup i dont mind spending a lil cash but i still want whats best for my car. brad