[This review was collected as part of a promotion.] This is great oil that I used in my high mileage car. It really seemed to help and quiet the engine. It also seemed like I got better gas mileage after my oil change. I have used many different oil brands and this is one that you can trust will do a great job.

[This review was collected as part of a promotion.] Pennzoil is a brand that I have always admired. I use it with the confidence because quality is in it's name. There are many brands to chose from but you will never go wrong using Pennzoil Synthetic. It's a name that's been around a long time and you can trust that.

[This review was collected as part of a promotion.] Pennzoil Full Synthetic Oil is tough stuff. This oil puts up with the real deal drive it like you stole it abuse. Dump the old and refill the life juice of your engine with this great stuff. came out looking like it went in. its a great reliable choice for all performance machines.

[This review was collected as part of a promotion.] I switched to this after using a competitor's full synthetic, and have noticed a difference in my higher milage car. The idle is significantly smoother, as well as engine noise has been reduced. I'm looking forward to harsher driving conditions this summer due to additional heat to put it to the test, but as of now, I have no worries its up to the challenge!

[This review was collected as part of a promotion.] This Pennzoil Synthetic oil keeps my baby running good and she's happy so I'm happy. I got a couple 1 quart bottle's and i poured them all in perfectly as i always do. I check ever quart by smelling it and i also give it a little taste and Pennzoil has a great taste so that's how i know it's good. lol

[This review was collected as part of a promotion.] I used this on my car and the difference can be felt immediately. My car is showing better performance now. I love that it enhances wear protection and less oil change is required too. Awesome one for my old car with old engine.

[This review was collected as part of a promotion.] This motor oil is perfect for the cooler temperatures. It is smooth and thin, it helps our car run great throughout the colder months of the year. I have used this in my wife's midsize SUV and it helped it run smoothly for many miles. I would recommend this!

[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.] 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.] Everybody needs a good quality oil for their car or truck. This is it! Pennzoil is a trusted brand and I use it all the time for all my vehicles!! The containers have a nice "grab handle" on them which make it easy for pouring!