I am looking to put 400k miles on my Accord. I know a guy with 330k on his 87 Integra and he use nothing but regular oil. Therefore, I am sure my car can do better because cars are better build now and I use Mobil 1. I would be a pain to think of how much money I will have to spend on gas in the future. It is amazing that Honda and Acura vehicles of the 80s didn't use much more gas than those of the last few years. I wish I was born much earlier to enjoy having a 500k miles Accura or Honda without going broke at the pump.