[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.] 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.] After replacing the engine oil in both my generator and lawnmower with this brand of oil the engine sounded smooth and run like a charm and this was the first time for me of ever using this brand of oil and in my opinion this engine oil is of the greatest quality of oil on the market.

[This review was collected as part of a promotion.] I have always used Pennzoil in all of my vehicles. This is another great great product that they make! It makes my motor run smooth while offering great protection for it. If you haven't tried Pennzoil, you definitely don't know what your missing out on!

[This review was collected as part of a promotion.] I have used Pennzoil for years. My dad used Pennzoil in everything when I was little. I got a case of synthetic oil for all of my annual services on all of my small gas engines. I have done all of my preventative maintenance with Pennzoil and never have had a problem.

[This review was collected as part of a promotion.] I picked this up to save a trip to the mechanic. I love the way this oil last longer than regular oil and it’s not that much more expensive. I highly recommend it to anyone wanting to change their own oil

[This review was collected as part of a promotion.] This came at a perfect time as my car needed an oil change. I usually go for Pennzoil brand oil because I’ve never had any issues and it is a trustworthy brand. The price is right and is good quality oil.

[This review was collected as part of a promotion.] I had an oil change using the Pennzoil full synthetic oil and my car seems to run very well. The 5w -20 oil is working to keep my engine clean and protect against friction. I had my mechanic use it and my car runs great.

[This review was collected as part of a promotion.] As usual great product. I’ve been using Pennzoil for years and this is my first time trying the full synthetic I was hesitant at first because I didn’t know much about synthetic oil. After some research at homework I found out the Pennzoil is one of the top oils in full synthetic. I am completely impressed and amazed by the quality that Pennzoil is presented in this product I highly recommend anyone looking for a full synthetic oil.

[This review was collected as part of a promotion.] It's a great full synthetic oil from a brand you can trust. So, the results are perfect, as expected! Great packaging for the shipping, impressive results! This oil will keep my car's engine running nice and smooth for the years to come.