[This review was collected as part of a promotion.] Protection of my car is my most important thing. I always need the best. Since switching to full synthetic I always go with this brand. I always change my oil as well. So I know it is done right and done well. My car runs better with this oil. I am thrilled with it.

[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.] 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.] I changed my oil with this Pennzoil Full Synthetic oil and will update this review in two and a half months after I complete another oil change. I put my old oil in an airtight container and will compare the Pennzoil to that once I do my next oil change. I have no other way of knowing how well the Pennzoil works other than to compare it to the brand I regularly use. I’ll be back! My wife says I can’t update reviews, so I will complete another review after my next oil change.

[This review was collected as part of a promotion.] This Pennzoil full synthetic is awesome! This is definitely the best oil I have used by far. This is a must have for anyone and any vehicle. I recieved this as a sample and this is 100% my own opinion!

[This review was collected as part of a promotion.] I used this pennzoil in my last oil change and it made a big difference in performance and engine noise. It stayed cleaner longer for better protection. I like the convenient 5 quart jug which makes filling up simpler. I would definitely recommend giving this a try specially for the value you get at the price point.

[This review was collected as part of a promotion.] Pennzoil is a fantastic product, very high quality oil that you can put into your car and then have a lot of confidence it will do its job. Love the full synthetic as well as it allows for longer times between changes saving precious time. Solid oil and company.

[This review was collected as part of a promotion.] After using this motor oil, I’m extremely impressed! The first thing I love about this oil is how well it maintains my engine’s performance. Ever since I put this oil into my vehicle, I’ve noticed improved gas mileage and have experienced nothing but smooth rides. My engine has also been able to maintain a consistent level of power during “intense activity” (such as driving up hills or mountains). Additionally, I really appreciate how smoothly the oil flows out of the container. It’s easy to fill my vehicle with the oil using this container’s convenient design. The size of the bottle is also perfect for occasionally topping off my oil levels. Overall, I’m extremely impressed with this oil and would recommend it to anyone in search of a high-performance oil that is sure to help your car live a long life!

[This review was collected as part of a promotion.] Pennzoil has always been a well known and trusted brand.This oil is great.It worked well in my vehicles and gave my motor a nice oil change that it needed badly.This oil allows my vehicle to perform top notch.This oil protects my engine horsepower.This oil leads to a much better performance.

[This review was collected as part of a promotion.] Pennzoil full synthetic oil works great for my truck. I just did an oil change with it and my motor seems to run smoothly. It is greatly priced and it can be used in my boat, vehicle and my lawnmower which is amazing. It is a trusted repeatable company that I trust. It is alway good to keep an extra in the car. I used a different brand previously but I will be sticking to Pennzoil strictly!