I've been using 5W-30 Pennzoil on my 2010 Nissan Titan Pro-4x since I bought it new. I change it every 7,500 miles, and have had no issues. I've sent used motor oil for analysis. The report shows everything is great with the oil. That I am replacing it at the right intervals, and there is nothing in the analysis to suggest something is wrong internally with the engine. My truck has 78,000 miles on it, and I haven't had any work done on the engine so far.

[This review was collected as part of a promotion.] Just had my oil changed with this in my 1992 Chevy Silverado and it runs like a new truck so much better oil than the old valvoline we used to use that foamed up nothing but PENNZOIL for all of our trucks now and in the future keep up the Awesome Oil!!!

[This review was collected as part of a promotion.] I use Pennzoil active in just about all of my toys. Its hard to find a good convetinal motor oil anymore now that everything can run senthetic. I need the conventional oil to run in my 1972 Chevy c10. I also use it my 2 dirt bikes and all of our ATVs. Stuff is just perfect. You can't ask for better and the price is way less then it is worth. I really enjoy your product and so does the rest of my family!

[This review was collected as part of a promotion.] I use to use other brands of oil and when I became a Mechanic and started working on cars once I seen the different effects oils had on the inside of engines it made me a believer that depending on what brand oil you use has a lot to do with your engines life. I made the switch over 20 years ago and cant find one bad thing to say about Pennzoil. If you want to take care of your engine and extend your engines life span without spending a lot in repairs use Pennzoil I've seen inside of many engines and with Pennzoil it keeps the inside looking new.

[This review was collected as part of a promotion.] I remember my dad sold me my first car a 72 Montecarlo first thing I wanted to do was an oil change I got the best filter I knew of at the time and 6 quarts of pennzoil conventionAL and was quite proud of the job I did!

I started using this product as soon as I found out you guys were going to sponsor my favorite nascar drive. Mr. Slice bread himself. Reba aka my sexy 2006 Dodge Charger has been purring like a kitten since I started putting pennzoil in her sexy v8 5.7 mouth.

[This review was collected as part of a promotion.] I have always used Pennzoil Conventional oil in my vehicles. I have also NEVER had any issues. All of them were high mileage, one was 275,000 before I wrecked it. My current car has over 100,000 and is running great!

[This review was collected as part of a promotion.] i have been using pennzoil for over 20 years and will never use anything else..i have never had an engine fail due to this product.i even ran it in my drag car and the engine held up for over two years with out tearing it down.it is the best oil on the market today..thanks guys for making this great oil.

[This review was collected as part of a promotion.] Dad used in in every vehicle he ever owned and so have I beginning with my new VW Beetle in '74. And we never had an engine problem with any of them. I have driven more than one vehicle most than 175k having never needed more than routine maintenance.

been using Pennzoil for years since i've started driving went to the store and bought my first oil didnt know much about oil so i bought the yellow bottle cause it look cool and little did i know i would be using Pennzoil in all the cars and pickup i own