[This review was collected as part of a promotion.] I have always used Pennzoil products for my cars. It is a trusted brand and in my family they have been used for years in all of our vehicles.

[This review was collected as part of a promotion.] Switched my all-original 1974 12hp Kholer to 30wt Pennzoil- seems to stay a little cleaner. Runs fine

[This review was collected as part of a promotion.] I've used Pennzoil 5W30 in 98 Blazer & 99 GMC Sierra since their purchase new. Changed every 3000 miles in each vehicle. No leaks & great performance.

[This review was collected as part of a promotion.] My family and myself have used this for years and it has never failed us!! Don't change what is not broken...

[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.] I have always used Penzoil synthetic blend and Active is my favorite to make sure I am taking care of my engine!!

[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

I drove a 1998 Ford Expedition until I sold it in 2015. Always used pennzoil and never had any major engine issues. Sold it with 150000 miles and it still ran great.

[This review was collected as part of a promotion.] I have been using this product in my racecars for years and have never had an oil related failure!

[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!