[This review was collected as part of a promotion.] I've been using this on my truck for a while now. It's getting a little long in the tooth (it's a 2005 model) and I want to prolong it's life as much as I can since I don't plan on buying another truck for a while. Full synthetic like this is the way to go. I've had no problems (knock on wood), so I just keep doing everything the way to maintain the truck for many more years to come. Thanks, Pennzoil!

[This review was collected as part of a promotion.] This is a very good oil that produces a very good used oil analysis reports. It appears to do a very good job of keeping the internal clean, And although not designed as a long drain interval oil you can’t push the limit. For instance I’ve went 15,000 miles with a turbo.

[This review was collected as part of a promotion.] Put this stuff in your vehicle and you won't have to worry about it for 7,000 or 8,000 miles. Great value, and cheaper than at any of the auto parts places. Numerous oil tests on BITOG will confirm, this stuff is one of the best performing synthetic oils available, and the price is great. This one always does well, very little burns off - and it comes out still in pretty good shape. Honestly can't think of a good reason not to buy this oil.

[This review was collected as part of a promotion.] Received this Oil a few days back ,have been a user of Pennzoil Brand for many years now and never have had any engine problems with my car or truck .Started using Full Synthetic in my high mileage truck and it still going strong with over 280,000 miles on it and i owe all to the Oil I use Thank you Pennzoil

[This review was collected as part of a promotion.] Used Pennzoil full synthetic 5w-20 at my last change, replacing another brand. I run synthetic in my 2007 Chrysler Pacifica and this Pennzoil is doing just fine after nearly a thousand miles run on it. Seems to do better on it than the previous brand, which was already a huge improvement over conventional oil.

[This review was collected as part of a promotion.] I have switched from regular oil to synthetic one last year and I will never come back. It saves so much time, money and labor work. I use the Pennzoil oil for both my truck and my wife SUV. I do all the oil change so it's great to experience the big difference this oil can make. The cars run smoothly and nicely. But the most important is it takes less time to change oil for each car. Before I used to change at least every 3 months, now I can wait till 9 months or a year depending how much I drive. Like I said earlier, after using synthetic oil, i will never go back to the the regular one anymore.

[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!

[This review was collected as part of a promotion.] Pennzoil Full Synthetic oil is entry level synthetic oil for people changing from regular oil or blend to full synthetic oil. Pennzoil is great and I always depend on it to keep my vehicle running smoothly

[This review was collected as part of a promotion.] I have been using Pennzoil for as long as I have been driving. I have never had any issues that were oil based. It works great, and has a great legacy behind it. I'll continue using Pennzoil in all my cars going forward.

[This review was collected as part of a promotion.] I got this oil for my car because I thought I’d try using synthetic oil and see if it works better than conventional oil. So far, I’m better gas mileage, the engine seems to run a little smoother and I can go twice as far between oil changes. It’s a win win win.