I live in the south border with really high temperatures plus the heat of my turbo. Really love 10w40

[This review was collected as part of a promotion.] Cleans better than rest of the competitors will buy again and recommend them always.

It's The Only Oil I Use In Every Engine I Own Or Have Ever Owned! And The 1998 Ford Explorer Has 175000 Miles And Still Runs Like It's Brand New!

[This review was collected as part of a promotion.] The only one I will ever put in to anything I drive

[This review was collected as part of a promotion.] Always use this oil for my cars to keep them on the road longer

I have used penzoil for years now. It keeps my car running and I have not had any problems with it. It also is easy to use. Thanks Penzoil!

[This review was collected as part of a promotion.] My 5.7 HEMI runs great thanks to pennzoil I get the best performance and Durability

[This review was collected as part of a promotion.] All around good and reliable oil for the price, which is very reasonable.

[This review was collected as part of a promotion.] I Request for my oil to be change with Pennzoil and if I ever need to add any I use it,

[This review was collected as part of a promotion.] 3000 miles to go, just changed and I'm good for the winter and more!