I usually change mine around 5,000 miles. Most of my driving is highway miles. I have a 2001 Civic with 220,000 miles. I was an 3,000 mile oil changer but changed to 5,000 miles. Must admit that it did bother me a first but now I have no problems letting it go to 5,000 miles. With this being said I still change the oil in my wifes van at 3,000 miles mostly because she does more city driving as opposed to my highway miles.