[This review was collected as part of a promotion.] I got 6 quarts of Pennzoil Full Synthetic. I changed the oil in my car and used this for the replacement. I don't know if this is possible but after about 10days of use I truly think I am getting better gas milage. The car runs quieter than before. This is a good product and everyone should be using a synthetic in their car.

[This review was collected as part of a promotion.] I received this oil last month . I really love brand of oil. I love it’s synthetic which I use in all my vehicles since they all have high milage. I really like this brand and will be using this from now on’.

[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.] It is very difficult for the average person to evaluate oil. I do not know the inner workings of engines. But what I can say is that my experience with this Pennzoil Full Synthentic comes with no compaints whatsoever. The bottles are easy to handle, I'll be using this oil for my next oil changes for sure. My car is 11 years old and the engine has been a bit shaky lately, but I used this oil to top off and it's been running smoothly ever since.

[This review was collected as part of a promotion.] This is a great oil to treat your engine to if you have never tried it before. It was able to make my engine in a relatively older car run noticeably smoother than before. I was surprised at the noticeable increase in efficiency.

[This review was collected as part of a promotion.] Pennzoil Full Synthetic Motor Oil is good quality motor oil that helps keep my engine running smooth. It is better than conventional oil and will allow for fewer oil changes in the future so that is a plus.

[This review was collected as part of a promotion.] Pennzoil® Full Synthetic engine oil is a full engineered engine oil that is appropriate for use in new and more established motors. It is detailed to give 40% preferable execution over traditional engine oil1 and permits less oil changes contrasted with customary engine oil. Along these lines, if your vehicle as of now requires full engineered, or in case you're hoping to update from traditional or manufactured mix Pennzoil® Full Synthetic is the correct decision for you.

[This review was collected as part of a promotion.] I use this for a multitude of things that uses this oil. It works perfectly in my car. I don't think I have ever had my car run so well before. It seems like it runs smoothly as well. I went on a few trips already out of state and there hasn't been an issue.

[This review was collected as part of a promotion.] Pennzoil is the best oil out there. It has yet to let me down and everytime I've tried a different oil, whatever machine I'm using the other oil on doesn't seem to last as long. Pennzoil guy for life!

[This review was collected as part of a promotion.] Pennzoil Full Synthetic is their top of the line oil. I have used it for years and it keeps the engine clean and running great. Meets Chrysler and Ford specs along with many others. 5000 miles between oil changes is no issue!