[This review was collected as part of a promotion.] I've been using Penzoil for 33 years. It's the best for keeping engines clean and performing at their best.

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!!

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.

Have had this in ALL my cars, kids cars and anyone in the family that I service the cars. Just had the top end of my 2002 blaze off for a intake gasket with 170k and the inside was clean as new!

We only use Pensoil in our vehicles. They run better and longer. Our last vehicle had 286,756 miles on it & we only used Pensoil in it. Two vehicles now, and Pensoil is all we use. Thank you Pensoil

I started with Pennzoil products on my first car in 1965. I have used Pennzoil in all my cars and all of my outdoor equipment. The last car I traded had 237K miles, car before 230K, car before 347K with no lubrication problems. Great product.

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.

[This review was collected as part of a promotion.] I've been a long time user of Pennzoil with 10 vehicles and almost 2 million miles I never had any real problems with any of them and I give the credit to Pennzoil and changing the oil every 3,000 miles in the past and every 4,000 miles on my jeep now. I will never use anything other than Pennzoil

[This review was collected as part of a promotion.] My boyfriend is a mechanic for Trans Edge, a division of Mack Trucks. He actually does my oil changes and will only use Pennzoil! I highly trust his judgment and after an oil change my van runs GREAT!!