Not that any of us would try this but; what oil do you think would last the longest without being changed in a brand new car, say a Honda Accord. I want to know How many miles before the new Accord would lock up, and what oil. Also lets say the Accord will run none stop (highway) under normal temps until the lock up occurs. I'm sorry in advance for posting a question like this, but I'm interested to see what responses we'll get. For all the BITOG millionaires out there, feel free to try this at home.