I use this on my 2002 Impala.......and still using it......

I always use this when I'm changing my oil the only motor oil I will use

Price wasn't bad and it worked for my car

Very happy with this product. It has always been my favorite.

I prefer Penn Zoil over all other brands in any engine I own !!!

Great brand, had never let me down before. I trust it 100%

Only motor oil I will use in my car. Best brand out there

We bought Pennzoil oil and it is so much better than the generic oils

Use this since my first oil change, used it ever since. no oil related problems

Works great in my vintage Chevy! Wouldn't use anything else!