[This review was collected as part of a promotion.] I have never tried the synthetic oil previous to this. I heard rumors to stay away from synthetics in the past. My son in law is a farmer,( they use a lot ) and he is the one that convinced me to try it. I have it in my riding mower and truck. I guess I had some bad information.

[This review was collected as part of a promotion.] I have recently switched my car over to full synthetic Pennzoil. It was certainly an easy process to do. It seems to make things run nice and smooth. I would definitely recommend this product and brand.

[This review was collected as part of a promotion.] I changed my oil with this Pennzoil Full Synthetic oil and will update this review in two and a half months after I complete another oil change. I put my old oil in an airtight container and will compare the Pennzoil to that once I do my next oil change. I have no other way of knowing how well the Pennzoil works other than to compare it to the brand I regularly use. I’ll be back! My wife says I can’t update reviews, so I will complete another review after my next oil change.

[This review was collected as part of a promotion.] Wow who would of thought I would get some oil right in time for my oil change. I was just about to go out and get a oil change and here comes my phone ringing about a try it and it was oil, I was so excited so I went out and changed my oil. Great brand of oil and it was such a quick job.

[This review was collected as part of a promotion.] One of the best oils I have used in my vehicle. I’ve had no issues at all while using this oil. My vehicle runs great. I haven’t had any engine issues. My vehicle runs smoother and it doesn’t skip or anything. This is just one of those brands you can trust. I definitely will recommend this oil and always use it I’m very satisfied.

[This review was collected as part of a promotion.] I prefer using a full synthetic oil in my cars. This Pennzoil 5W-30 has worked well and I have had no issues with it. The bigger jugs make it easy to pour in and cuts down on plastic with the smaller bottles. I recommend this full synthetic oil.

[This review was collected as part of a promotion.] Since 1913 Pennzoil has been a true and trusted product for autos. And they've continued caring for our cars and trucks by coming up with a full synthetic oil that not only better protects our engines, it also outlasts regular oil allowing more miles between oil changes. It's a great product for my car which has over 200,000 miles, and is still going strong.

[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.] 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.] Pennzoil Full Synthetic is all I use on my vehicles. I have a Jeep and of course I change my own oil. I love how easy this is to use and the quality it provides to my vehicle. My Jeep is running smoothly.