My father always had a case of this stuff on hand- it's the only oil he'd ever use. All of his vehicles, from 1970 Dodge Challengers to Ford Aerostars and everything in between, have ran smooth as butter.

[This review was collected as part of a promotion.] This is by far the classic product I always use. Keeps my engines humming and smiling on the inside while I smile on the outside knowing my engine is being protected.

[This review was collected as part of a promotion.] I have been using this oil for a long time. It's the only oil I trust in my cars. Great performing I oil..

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!

[This review was collected as part of a promotion.] Been using Pennzoil since day 1 and wouldn't use anything else. Great lubricant and is top notch and number 1!

[This review was collected as part of a promotion.] This has always been the only oil my family and I have used.It has always gave us great service I would never use any other.

I had a lifter noise at start up. I changed brands of oil to Pennzoil and my lifter noise disappeared! Nobody will EVER tell me oil doesn't make a difference! A great product and will NEVER use another oil! Thank you Pennzoil.

[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 review was collected as part of a promotion.] I bought this months ago and oil still looks semi new and has cleaned valves a little while running it

[This review was collected as part of a promotion.] I always get a Pennzoil oil change and am so glad that I do because I know my car is protected with the best oil there is.