I drive an accord ex and my engine recently blew up. I put in another f22a6 with only 60,000 miles on it. I usually use just regular 88 or whatnot, but someone told me I should be using 93 or above since I drive an EX. Is that true? When I bought the car, it didn't have the owners manual and I never thought about checking something like that since it was just an accord.