The 3000 and 3500 mile oil change intervals are perhaps the biggest fraud since Obama. They were brought on by the quick oil change chains like Jiffy Lube and such through the 70s
Jiffy Lube DIDN'T come about til 1979 so much for the 70's..as for the original poster change your oil when you feel it needs it oil and filters are cheap enough to buy..change mine every 3000 could careless what all the so-called expert's think:):):)
