[This review was collected as part of a promotion.] We have several older vehicles and when we started using it our cars started running better and more efficient. We highly recommend this product to our friends and family. It is very cost effective. We bought a whole case.

[This review was collected as part of a promotion.] This works great for my car. I followed the instructions and saw some videos to see how to use and followed accordingly and I was happy that it works well for my engine. Full synthetic and great quality. I used it for my 2010 Toyota Corolla and my car is running smoothly.

[This review was collected as part of a promotion.] I do the oil changes for both vehicles in my household. I got this Pennzoil Full Synthetic oil for my Mini Cooper. It’s a great oil. My car has been running great since I changed the oil and put this new oil in it. This oil is easy to work with and I’ll definitely use it again when it’s time to change my car’s oil again.

[This review was collected as part of a promotion.] What can I say, great product from a company that is well known and trusted. Feel comfortable knowing this will keep the cadillac running for years to come, great product and packaged well when shipped to my house.

[This review was collected as part of a promotion.] Got a case of this oil for my boat. Changed the oil for the beginning of the boating season. Seemed to have a great texture and consistency. I am please with the results and will be using this for my future needs

[This review was collected as part of a promotion.] I love this brand of oil, especially the full synthetic type. Use this in my 14 Edge and go for 10,000 miles. I've used many different brands over the years, but always go back to Penzoil for it's quality and availability.

[This review was collected as part of a promotion.] This is the best oil that I have used. It is long lasting and my vehicles run great with it. I will not use anything else in my vehicles and I think that their life is extended from using this. I wish I would have switched earlier... Well worth the money.

[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.] Ive used Penz for years in my cars. I always appreciate the quality of their product. Especially as they have introduced synthetic. I've gotten out of the habit of changing oil, but my son and I worked on changing his together. A great product!

[This review was collected as part of a promotion.] My car only takes full synthetic oil so this pennzoil is a great oil for my car. The bottles were easy to open and easy to pour. I am sure I will get the full mileage out of the oil. The bottles can be recycled which is a big plus.