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

Been using this product for 17 years now. It always keeps my motors running smooth.

Been using this in all my engines for 40 plus years

This is the only oil I use for my car it runs awesome all the time because of it

I also buy the best so I stick to Pennzoil for my van

I HAVE BEEN DRIVING FOR 50 YEARS AND PENNZOIL IS THE ONLY MOTOR FOR ME.

I have always used Pennzoil 10w-40 in my trucks, and have never had a failure!! Thanks Pennzoil!

Happy with the difference it made in my old car. Sounds beautiful.

I'm very happy with the way this does in my car compared to others.

Have been using pencil in my ford f150 truck. 170k miles and running strong.