[This review was collected as part of a promotion.] Bought this when i was down a quart . Worked well. Had the oil changed about 45 days later. No issues.

[This review was collected as part of a promotion.] I will be honest I don't know much about engine maintenance but I do know what my father has always depended on and it's Penzoil. I use it now too because it is high quality that I can depend on.

[This review was collected as part of a promotion.] Have used Pennzoil oil since I was a kid on my bicycles and in all my vehicles we owned a full service Pennzoil station for over 30+ year's and that's the only oil I will use period!

[This review was collected as part of a promotion.] I have used this in my truck for many years. it keeps it running smooth and keeps the engine like new!

[This review was collected as part of a promotion.] I have been using this product since I started driving in 1978. Cars from 1964 El camino to 2014 Fiat .

[This review was collected as part of a promotion.] I've used Pennzoil for years in my race car and personal vehicles. I have never had any problems related to the oil. It keeps everything clean and well lubed!

[This review was collected as part of a promotion.] I have been using Pennzoil as long as I have owned a,car at age 16. Now 50 Pennzoil will never let you down.

I use Pennzoil when I change the oil in my truck and as of now it has over 310,000 miles on it without having any major engine problems. So this stuff must be doing its job! Keep it up...

[This review was collected as part of a promotion.] I've been using the original penzoil for over 30 years and have had great length of life in every engine I've owned. Trusted it in the '80's and trust it today for all my engine lubrication needs.

[This review was collected as part of a promotion.] I used to be a Valvoline user until one day I dropped the oil pan to change the pump... I couldn't believe the gunk.... Pensoil had kept my engine clean without the build up...