[This review was collected as part of a promotion.] The only brand we use. Our vehicle now has over 180,000 and still running great.

[This review was collected as part of a promotion.] My car runs so much better with Pennzoil than any other brand, it's amazing.

[This review was collected as part of a promotion.] I've used pennzoik 10w30 in my vehicles for years without a problem

[This review was collected as part of a promotion.] I have been using Pennzoil oil for 42 years now and never had a problem with oil break down.

[This review was collected as part of a promotion.] This is all I use in my car an truck and would highly recommend it to everyone.

I'm used pennzoil off and on for years, always does a good job of cleaning sludge out and my oil pressure stays steady.

Ive always used pennzoil in my cars the oil is top notch and enexpensive and ive always never had any problems with it

[This review was collected as part of a promotion.] This is always used in all my Chevrolets, 1973 to present.

[This review was collected as part of a promotion.] I have used pennziol for years in all our vehicles

[This review was collected as part of a promotion.] had an oil change done bout a month ago man what a difference.