[This review was collected as part of a promotion.] I've been changing my own oil for a lot of years now and have always trusted Pennzoil. I have tried other brands before but keep coming back to Pennzoil so far I've been very pleased with Pennzoil full synthetic as always great quality

[This review was collected as part of a promotion.] I have used Pennzoil Synthetic motor oi in my vehicles for years. I have had good luck with it. I drive a lot of highway miles at high speeds and I believe that Pennzoil is the best choice for high speeds and longer driving times. I run 8000 miles between changes.

[This review was collected as part of a promotion.] I recently received the Pennzoil Full Synthetic motor oil and immediately noticed a difference in the way my vehicle ran after use. The oil, which is certified by the American Petroleum Institute, allows my car to run longer between oil changes and increased the fuel efficiency. Over time, choosing full synthetic compared to regular motor oil will save you plenty of money. I have even noticed a difference in the way my car drives, most likely based on the advantages this oil provides to my engine. I would highly recommend this motor oil, especially to anyone looking to protect their vehicle while also saving money in the long run.

[This review was collected as part of a promotion.] We use this oil in our Subaru Forrester 2010, it really helps the engine run smoothly. Our car has over 125K so it does burn some oil, and it is always nice to have this on hand to top off when needed.

[This review was collected as part of a promotion.] Recently did an oil change and my thought always was that all oils are the same. I was wrong. My car was actually quieter and burned less of the Pennzoil than my previous brand. Seems to last longer also as I checked my oil and it was not black or dark as usual. Very pleased and will be using Pennzoil in all my cars for now on

[This review was collected as part of a promotion.] Ive used Penz for years in my cars. I always appreciate the quality of their product. Especially as they have introduced synthetic. I've gotten out of the habit of changing oil, but my son and I worked on changing his together. A great product!

[This review was collected as part of a promotion.] I have a late model GMC Yukon XL. Runs great but burns oil more than it used to. I like keeping this around to top off every now and then. Full Synthetic is my choice for extra protection for the high mileage engine.

[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.] This is a great product from Pennzoil. The quality of the oil after 5,000 miles is great. It wasnt watery so the viscosity holds up great. Great synthetic oil you can trust. I'll keep using Pennzoil for all my vehicles.

[This review was collected as part of a promotion.] Used this in my last oil change for my Mazda 6 before doing some travel this summer. The car continues to run great, and the oil still looked clean when I checked it after running about 1000 miles in the heat. Oil is a hard to review, because it is one of those things you only pay attention to when it is not working, but I'm happy to report that this full synthetic has worked great for me.