I figured this would be interesting to see what BOBISTHEOILGUY people had to say about these statements from a synthetic oil web site. 5w 20 Facts or Fiction? "You get about 1% better fuel economy, but you get 30% shorter engine life !" "The above statement is based on real life experience and is comparison to SAE 5W-30 Motor Oil." "FORD which has previously designed cars to have 10 year or 150,000 miles life has reduced the mileage life expectation to "beyond 100,000 miles" on vehicles that are operated on SAE 5W-20 Motor Oil." "HONDA only claims "useful life" as 7-years or 70,000 miles in EPA certifications for their CIVIC which uses SAE 5W-20 Motor Oil, while the previous model that utilized SAE 5W-30 Motor Oil was certified for 10 year or 100,000 mile durability."