first off this excludes diesels, so don't even try but what i am looking for is everyones opinion on what is or was the most day in day out reliable engine ever made? I would like to start by throwing out two that i can't decide which is more reliable First the 1UZFE-4.0 V8 found in the Lexus LS-400 models, Second would have to be the famous 22re 4cyl. I would tend to lean more towards the 1UZFE just because i have seen these engines personally with upwards of 500,000 miles with no major rebuilds on a consistent basis. Now it's your turn tell me what you think is the most reliable Engine ever made.