[This review was collected as part of a promotion.] I got 6 quarts of Pennzoil Full Synthetic. I changed the oil in my car and used this for the replacement. I don't know if this is possible but after about 10days of use I truly think I am getting better gas milage. The car runs quieter than before. This is a good product and everyone should be using a synthetic in their car.

[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.] I have a Lexus ct200h. I can begin to tell when the oil is getting old as the car begins to lag a bit and the mileage is a bit lower. The Pennzoil Full Synthetic did the trick on making the engine run smoother and my mileage has ticked up a bit as well.

[This review was collected as part of a promotion.] Ever since changing to this oil in my minivan ive noticed a major change in the performance of my van. It has improved my gas mileage and made my van run more smoothly. Before this oil my van would have a small miss fire but after this oil ive had no problems at all with it. Over all this has been the best oil ive ever personally used and I won't go back to my old stuff.

[This review was collected as part of a promotion.] Pennzoil Full Synthetic Motor Oil is good quality motor oil that helps keep my engine running smooth. It is better than conventional oil and will allow for fewer oil changes in the future so that is a plus.

[This review was collected as part of a promotion.] Used this for oil changes in all my equipment, feel totally confident in the Pennzoil brand, and I prefer Synthetic over traditional oil. The case was just the right amount for all my machines with a spare bottle left over.

[This review was collected as part of a promotion.] I recently received this motor oil and glad I did. It seems like the performance in my Jeep is better and it is running smoothly without any sort of performance issues. I’d recommend it to anyone looking to upgrade their oil.

[This review was collected as part of a promotion.] I used the Pennzoil Full Synthetic 5W-30 in my Chevrolet 6.0 after verifying it is Dexos approved. My mechanic commented that it is excellent oil. It functions well, holds good oil pressure and the engine ran cool and quiet.

[This review was collected as part of a promotion.] I recently purchased some Pennzoil Full Synthetic Motor Oil. This oil is very reliable to use since it is manufactured by Pennzoil. This company has been around for many years, I know because I used it when I was a kid and that's been a long time ago. The use of this oil allows you to go many more miles between oil changes. The full synthetic oil is manufactured from natural gas which is very good for emissions and is readily available. It meets all gasoline engine manufacture's requirements. I thoroughly recommend this motor oil.

[This review was collected as part of a promotion.] I've always used oil weight of 5w 30 in my jeeps engine. I was never really picky about the brand of oil I used. As long as it did it's job. I was so wrong. I've been having a few miner issues with the performance of my Jeep. When I talked to my mechanic he said it's your oil, try a different brand. So Pennzoil it was and I'm glad I did. My Jeep engine sounds better. It was quick and easy to change my oil myself and I'm loving the Pennzoil brand. Great performance!