[This review was collected as part of a promotion.] It was service time for my Lexus and it requires 5W20. Previously, it would get maybe 16mpg in town and 22 on the road. Average at best. After the change to this synthetic oil, my mileage improved a solid 1 mpg both in town and on the road. Impressive for something so simple.

[This review was collected as part of a promotion.] My Porsche loves this synthetic oil, it runs my car smooth and very efficient. It leaves no residue and takes care of my engine. Definitely something to invest in if you want your car to last long and continue to function perfectly

[This review was collected as part of a promotion.] I was sent a case of six bottles of Penzoil Full Synthetic oil to try. First off I was shocked that I ended up getting a case of this oil. This oil works great for my car. Sometimes I tend to buy cheaper oil and I think that that oil does not work as well. Using Penzoil I know that it is better for my car and lasts longer. Having six separate bottles is more convenient than having to store a big bottle. This oil has just the right amount of thickness, meaning its not watery like some other brands.

[This review was collected as part of a promotion.] You pay so much for your car, so you definitely want to use the best products for it and this oil is definitely something your engine will thank you for. I've never had any engine issues when using this type of oil and it runs smooth.

[This review was collected as part of a promotion.] Penzoil is a premium brand for your car. It Cleaner pistons , better fuel economy, protects horsepower, unsurpassed wear protection, excellent performance in extreme temperatures Its was very easy to use in my car I did not get the big 5 gallon jug but six regular sized bottles. This is great for my car that does not have high mileage.

[This review was collected as part of a promotion.] Had no problems with this Pennzoil Full Synthetic oil. Used it to change my oil. Easy to open and close. Easy to use. Comes out great. My van runs nice. I would recommend this product to all my friends.

[This review was collected as part of a promotion.] This is my first time using full synthetic oil and I wouldn’t do it with any other company than Pennzoil. My buddy has been trying to get me to do this for several years but I have been stubborn. I finally decided to give it a shot and put the Pennzoil Full Synthetic in my truck. I have seen a difference already in the way my engine runs. I took it on a 4 hour drive and it was smooth as it was the day I bought it. I am looking to get an extended period on the full synthetic. I will continue to monitor this over the mileage. This oil was packaged in nice quart size individual packaging. Easy to pour and easy to grip. I am currently satisfied and would recommend this oil to anyone looking for a full synthetic oil.,

[This review was collected as part of a promotion.] This Pennzoil Full Synthetic Oil is high quality, affordable, and made by the best in the business; Pennzoil! I love the design of the bottle as well for a nice even and smooth pour. The additional handle comes in handy when putting it into the funnel.

[This review was collected as part of a promotion.] Pennzoil is the best oil out there. It has yet to let me down and everytime I've tried a different oil, whatever machine I'm using the other oil on doesn't seem to last as long. Pennzoil guy for life!

[This review was collected as part of a promotion.] I just love using Pennzoil it is a great motor oil I feel the motor runs smoothly and I get much better fuel mileage with my truck I do recommend Pennzoil Synthetic oil to all my friends and the friends that use it say they like it also