[This review was collected as part of a promotion.] Used this in my last oil change for my Mazda 6 before doing some travel this summer. The car continues to run great, and the oil still looked clean when I checked it after running about 1000 miles in the heat. Oil is a hard to review, because it is one of those things you only pay attention to when it is not working, but I'm happy to report that this full synthetic has worked great for me.

[This review was collected as part of a promotion.] We use this oil in our Subaru Forrester 2010, it really helps the engine run smoothly. Our car has over 125K so it does burn some oil, and it is always nice to have this on hand to top off when needed.

[This review was collected as part of a promotion.] Used Pennzoil full synthetic 5w-20 at my last change, replacing another brand. I run synthetic in my 2007 Chrysler Pacifica and this Pennzoil is doing just fine after nearly a thousand miles run on it. Seems to do better on it than the previous brand, which was already a huge improvement over conventional oil.

[This review was collected as part of a promotion.] I really think that Pennzoil Full Synthetic motor oil is the most reliable, best quality motor oil a car owner can buy for their automobile, I have been a loyal user for years and have only seen great results. I would not use any other brand. I would definitely recommend Pennzoil Full Synthetic to anyone wanting a wonderful product for their vehicle.

[This review was collected as part of a promotion.] Engine oils Came in 1 qt 6 packs, took it to my mechanic, they changed it into my 100k Toyota Camry, and got it inspected. I’ve been driving it 80 miles a day, from Long Island to nyc, back and forth, no problem , running smoothly.

[This review was collected as part of a promotion.] I use this oil in all my vehicles I think it last longer and works better during winter months. Keeps the vehicle running good don’t hear noises from like other oils that seems to run thinner after using for a month.

[This review was collected as part of a promotion.] I changed my oil 11 days ago and replaced with the Penzoil synthetic. I have always used synthetic as my car requires it. Traditionally, I would use the manufacture brand. I did not notice any difference from this brand to the previous. Unfortunately , I am writing this review 11 days after trying. Ideally, if I were able to wait the 5000 miles and then my review would be more comprehensive and complete. So far the oil seems the same as previous .

[This review was collected as part of a promotion.] This oil works great! Car runs well. Pennzoil has always been a good quality company and one I can count on for knowing I’ll have a good quality oil in my car. It works great and car runs well. Easy to change.

[This review was collected as part of a promotion.] This motor oil works great for my car. I used it for an oil change and had no problems. I also love the handles which makes it easy to carry. The scent is overpowering but its to be expected with motor oil

[This review was collected as part of a promotion.] Very good oil I use this every oil change I would definitely recommend this to family & Friends.as they stand by there name and product I have used this for years and not one problem all you need to know is how to change your oil and you will be good.