My dad used Pennzoil forever and I was taught at a early age to always use Pennzoil. Our family has never had a engine failure and my 1993 Ford Ranger has always had Pennzoil when the oil was changed and it has over 300,000 miles on it and counting!

Been using this in my 1995 GMC Sonona Pick Up. It's got 350,000 miles and still running strong. I change the oil every 5000 miles. Won't use anything else but Penzoil!!

I do a 5,000 mile oil change on my 2010 Toyota Highlander. I have about 70k each time its changed I ask the tech how it looks. It is always still golden in color.

My van has made it to over 350, 000 miles and still running good I believe its because I only use pennzoil thank you pennzoil for making a wonderful product I swear by it whole heartedly

Use it on a variety of vehicles including a 1987 f250. Has never left me wondering about the type of protection oil offers. I know I can recommend this product, and others will love it too.

[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.

[This review was collected as part of a promotion.] Multiple cars and suvs over the years and I've always trusted Pennzoil. It's always kept them running smoothly until my next oil change. It's a tradition passed down from my father when changing the oil in all of his vehicles.

[This review was collected as part of a promotion.] When I was young I assumed all motor oils were the same. Then I put cheap oil in an old pickup. The engine was much noisier and I was afraid it would fly apart. I immediately went to the auto parts store and asked what they recommended. The counter guy was a weekend racer who swore by Penzoil. I drained out the junk oil and put in Penzoil. The engine quieted down immediately. I have used nothing but Penzoil for the last 35 years.

[This review was collected as part of a promotion.] I have been using Pennzoil in my rat rod for three years! I keep my foot heavy on the throttle, giving total abuse, wIting to blow its small block in order to replace it with a big block and the sucker just won't pop! I have confidence this product has ideal viscosity... The big block awaits ... Maybe I will boil the water out one day! Ha!!!

I used 10-30 w.in All Vehicles that I've Owned. I Had a Jeep Cherokee with a 4 liter inline6 cylinder in it and Put 335.000 miles on it before it got in a Crash in a IceStorm.A Freind Bought the Motor and Put it in His Jeep .He has put over100.000 more miles on it and last check she is still going. And We Have Been Rough on it at Times. Bottom Line Best Oil I've Ever Used.