Just wanted to comment on Formula Shell 5w30 I started using this oil several years ago for a fleet of cars, SUV's and small trucks at my business and this oil for the price works out great. I have a Buick with the 3.8V6 that we pulled the valve cover off to replace the leaking gasket and the motor looked real clean with 275,000 miles and it runs great! I have several high millage ford Focus cars all running fantastic as well on the Shell oil. Also a high millage Jeep Liberty doing just fine. So just wanted to say if some of you see Formula Shell oil for cheep don't pass it by its good stuff!