This is the cleanest oil I have ever used and has not let me down over the 6 years I have been using it. Pennzoil PROUD!

[This review was collected as part of a promotion.] It'll put a smile on your car! Makes an older engine run super smooth.

[This review was collected as part of a promotion.] Been working flawlessly without failure for years.. Keeps engine clean and smooth.

[This review was collected as part of a promotion.] We all use in all our vehicles it is good we went from quarter state to pennziol

[This review was collected as part of a promotion.] I buy this product every time i have work done on my car

[This review was collected as part of a promotion.] Its all I use, I love. Not one issue for over 100,000 miles!

[This review was collected as part of a promotion.] Used Pennzoil for many years and never had an oil related issue in any vehicle.

[This review was collected as part of a promotion.] I've used Pennzoil for years and have driven several vehicles to over 300,000 miles!

[This review was collected as part of a promotion.] Always used this for as long as I can remember as did my father and my grandfather

[This review was collected as part of a promotion.] I put Pennzoil in my New Buick and it still runs like new, I love it!