I have used this over the past years and I have gotten better gas mileage out of oil as it breaks down.

[This review was collected as part of a promotion.] Learned what to use from my Dad! He taught me how to take care of vehicles!

[This review was collected as part of a promotion.] We have used Pennzoil for many years and won't use anything else!!!!

My dad used this for years and my family well use it my kids and grandkids. For many more years very pleased with this product and won't ever change

[This review was collected as part of a promotion.] Good ,price...good products family has used all of my 52+ years,long trusted name !

This may just be the original but we have been continuously using it for years in my family and it still works today!

[This review was collected as part of a promotion.] Every time I get my oil changed they tell me that my oil really didn't need to be changed!

[This review was collected as part of a promotion.] HAVE BEEN USING IT FOR MORE THAN 30 YEARS AND WON'T SWITCH

[This review was collected as part of a promotion.] Third generation family user. I use it in everything I own.

[This review was collected as part of a promotion.] Use pennzoil for all my oil changed on all my cars