[This review was collected as part of a promotion.] Since I was a teenager my father told me to always use pennzoil I ve drove some very hard run hand me down vehicles with many miles all well over 250,000 miles all still running like a top All of which only had pennzoil products used in them My whole family swears by Pennzoil its the best product by far way better than all the rest

[This review was collected as part of a promotion.] I started off using Pennzoil because Dad did but as time went I became a loyal user as I used and abused my 1970 'Cuda and the motor held up. I have continually used Pennzoil products in all my cars because when I buy a car, I like to keep it around for a while.

[This review was collected as part of a promotion.] Iv'e used Pennzoil all my life I can also tell that this product keeps the internal parts of the engine Clean . I know this because I have replaced valve cover gaskets on high millage engines that have nothing but Pennzoil used in them.

I usually have my oil change at stores that carry Penzoil....because I have owned a lot of different cars, makes and models and they all ran with out major engine problems...yes I keep 'em well past 100k....I can only attribute it to regular oil changes with Pennzoil..

[This review was collected as part of a promotion.] I have always used Pennzoil in my cars. I have often seen other motor oils on sale for a cheaper price than what I pay for Pennzoil but I'll stick with Pennzoil because it may be cheaper but most likely the quality is cheaper too! Pennzoil is the best!

[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.

[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!

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.] 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 used the 10W 30 in my auto with wonderful results. Sold the vehicle with 366 thousand and still running strong when I saw my old car years later with 422 thousand on it then. Change you're oil and good things happen.