[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 will start by saying that if you are looking for a detailed analysis of the oil itself, you should look for a chemist or petroleum engineer. So, I won't comment on what the oil is made of itself. Instead my review is on using the oil. I do my own oil changes and have been using Pennzoil for a while now. I really like the oil. My car has been running fine and have had no engine issues. I have nothing but a positive experience with Pennzoil. Now, if you want to decide which oil to get my honest opinion is that the brand doesn't really matter. As long as it's a major brand it will be fine. The most important thing is to make sure that you get the right oil. Check your owner's manual or pop the hood. The oil type will be written on the oil cap.

[This review was collected as part of a promotion.] After some work to get my 2010 Mini Cooper running well again, the mechanic recommended this synthetic. So far, so good. The engine performance has been maintained, running nice and quietly, and I am not losing oil anymore. I have also been able to go to 6 month oil changes instead of 3 month oil changes, which easily offsets the slightly higher price.

[This review was collected as part of a promotion.] I used this for an oil change recently. As far as adding this oil it poured well and as far as oil goes it had a good color to it definitely a quality oil. So far seems to be working well. First time I have used pennzoil and I'm a fan.

[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.] I used this to change the oil in my truck with over 2000 thousand miles. Had no problems with it at all. Drove it about a week. And check it and it looked nice and clean. Will definitely be using for my vehicles from now one.

[This review was collected as part of a promotion.] Pennzoil Full Synthetic is the only motor oil I use in my cars simply because the brand’s oil provides superior protection for your engine and enhances its performance. What’s more, the oil removes all impurities in your engine by loosening the dirt and grime stuck between the moving parts of your engine. This allows for a smoother drive and cleaner engine that performs optimally for longer. We especially love the price because synthetic oil can be pricey. Pennzoil synthetic oil is affordable and more accessible and budget-friendly to consumers.

[This review was collected as part of a promotion.] If you are like me and do work on vehicles at home like changing oil, adding windshield washer fluids, etc than boy do I have the perfect oil to be used to change yours at home in the comfort of your garage, shop, or even in your driveway or grass. I'm always tinkering with mine and my family's vehicles and one thing I always remember to do is to change the oil as it approaches the mileage recommended. While I've used different brands in the past Pennzoil Full Synthetic is top notch in my book! I get the box containing 6, 1 QT bottles of Pennzoil Full Synthetic 5W-20 which gives your vehicle 40% better performance than conventional motor oil. Although this brand has many varieties this particular one offers not only better fuel economy but it will go longer between oil changes, protection in extreme temperatures, conditions older seals as well as protection against sludge & deposit build up. Those being my main concern with my wife and teenagers driving. It's an amazing feeling knowing this trusted company had any consumers worries to a minimum of not gone completely! I am a repeat Pennzoil purchaser but think I'll continue using this particular one for adding oil to doing the works with helping my family with complete oil changes.

[This review was collected as part of a promotion.] This is a great oil to treat your engine to if you have never tried it before. It was able to make my engine in a relatively older car run noticeably smoother than before. I was surprised at the noticeable increase in efficiency.

[This review was collected as part of a promotion.] I have been using Pennzoil products for 40+ years without an oil related engine failure. Pennzoil Full Synthetic Oil has kept my vehicles running smooth. This is a good quality oil at a good price. Highly recommend