So I researched the certifed motor oil brand at Sam's club. I found that the 5w20 is made by Warren petroleum and the 10w30 and 5w30s are sopus. I compared the pqia voa of the 5w30 to the other soups brands and concluded that I believe certified 30 weight oils are probably resbottled formula shell. I also confirmed by the barcode # on the quart bottles i bought, that it is a sopus product. The case of 12 quarts just cost $24.
Anyway my initial intent with this post was that they only had 10w30 in stock so I bought it and am using it in my 08 Ford 2.3 motor and I think I'm loving it. My car specs 5w20. But the 10w30 makes it just purr like s kitten and run smooth. I never believed that a different grade of oil would ever make a noticeable difference but the 10w30 has proved different. I wasn't even expecting or even monitoring for any kinda difference. It's just so obvious I can't help but notice. So now I'm sold on 10w30. Almost never gets near freezing where I live so I can use it year round.
Anyway my initial intent with this post was that they only had 10w30 in stock so I bought it and am using it in my 08 Ford 2.3 motor and I think I'm loving it. My car specs 5w20. But the 10w30 makes it just purr like s kitten and run smooth. I never believed that a different grade of oil would ever make a noticeable difference but the 10w30 has proved different. I wasn't even expecting or even monitoring for any kinda difference. It's just so obvious I can't help but notice. So now I'm sold on 10w30. Almost never gets near freezing where I live so I can use it year round.
