Re: 9th gen vs 8th gen differences?
its mostly the fluids and tires, possibly a bit of aerodynamics. i have seen hybrid civics with a difference of 10mpg just on the tire choice. dw1 full syn atf, 0w20 full syn (or blend in some cases) motor oil. i have to admit im really skeptical about using these lower weight oils. 5w30 has always been the best all around oil even for a new honda. i suppose you can use a 0w30 if you live in colder climates, but going to a 20 hot weight is eventually gonna catch up to you. i remember at first they were only recommending this for hybrids, now its for all the civics and the engine designs have not changed between then and now.
2002 Honda Civic EX Auto