I'm looking into buying a 98 C280. From what I've seen on this forum, 98+ seems the best choice because of the v-6 and 5-speed trans. Are there any known weaknesses/problems? Can the car be maintained by a D-I-Y mechanic? I read somewhere the trans fluid can only be checked/changed by the dealer. Are there any other non-D-I-Y repair items. Thanks for your advice.