[This review was collected as part of a promotion.] I'll never use any other brand call me biased but my father used penzoil and I have my whole life. If it's not broken don't fix it is my moto.

Pennzoil 5w30 was used for my first oil change in my new S-10 in 1991, and still is. It's also the only oil ever used in my 2005 Silverado. Everything I own gets Pennzoil!

Even over 100,000 miles Pennzoil keeps my engine humming along without running low or any knock till up to 5000 miles between changes... Its great stuff.

This is the oil of choice in our household, consistently offering a trusted and true product! Never fails to live up to expectations. My Father brought me up using Pennzoil as I have my own Son.

[This review was collected as part of a promotion.] I have been using this oil in my kid hauler (92 Dodge Caravan) since I bought it new in 1991. I have had no internal engine issues in the 24 plus years I have been using Pennzoil oil.

[This review was collected as part of a promotion.] I have been using pennzoil for the last 40 years it's never let me down I've torn motors down that ran other brands and found slug but never with my pennzoil

[This review was collected as part of a promotion.] I have used Pennzoil for years and this is by far the one you can count on to take care of your car. Reliable!

[This review was collected as part of a promotion.] Been using this brand or watching it be used for 40 yrs. Dad is gone but when I use pennzoil it's like he is still out back for every oil change

[This review was collected as part of a promotion.] I've used this product in all my vehicles , it's dependable , last well , just does a great job in anything I put it in .

This is the brand I buy. We've used Penzoil in my family for years. Even in tech class we used Penzoil products. Quality no matter what type you buy or use it for.