remember some time back that on the npr 'car talk' radio hour, click and clack said that with some caveats, one does not have to change engine oil on a time basis. the caveat, a bunch of cold stars and a mile here and a mile there. looked through the maintenance records on one of my 126's. 1000 miles. oil changed last in august 04. mobil 1 15w-50. i drive this car maybe once or twice a month. never less than 20 miles or so. am i screwing up? i am doing this same thing with my other 126, a 6 cylinder unlike the car mentioned above. and my 91 miata with something less than 45k miles.