Jeep doesn't run rough, & there are no metal shavings in the oil when I change it. No problems with it whether I'm trail riding or on the highway!

[This review was collected as part of a promotion.] I started using Pennzoil about 10yrs ago n its the best ever

Always on my monthly summer lists. cars 2 Generator 2600 Chain saw Dirt bike Quad Or oil is your oil. Thanks for working so well.

[This review was collected as part of a promotion.] I use this for all my cars wouldn't use any other brand

[This review was collected as part of a promotion.] very dependable product. I've used Pennzoil for years and don't feel a need to change!

[This review was collected as part of a promotion.] The the only to use for any car. Dependable and safe.

Bought this recently to use in my generator, although I also use in my car and my tractor. Won't use anything else!!

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.] I have used Penzoil for as long as I have owned a car.

[This review was collected as part of a promotion.] I use it in all my vehicles and it has never let me down.