I started putting this in my vehicle as soon as 100,000 miles hit and have been using it since. It has really helped keep my enging going without any problems.

[This review was collected as part of a promotion.] I have been using this in my 05 Tahoe that has 175k on it the last two oil change and I tell ya I feel a difference in the get up and see the difference at the pump and the wallet

[This review was collected as part of a promotion.] I have a 76 3/4 ton power wagon with 260,000 miles on original running gear... love the feeling of getting more miles out of her..

[This review was collected as part of a promotion.] Tried this oil in our daily driver after using Castrol forever and was not disappointed. We have a new oil for the Gilmobile!

[This review was collected as part of a promotion.] There is no better brand name than pennzoil. Older car live long do to this product and the quality of it.

My car is a 2008 Chevy Impala LS with over 170,000 miles. This product amazes me. I get better gas mileage and it feels and runs better Now that I use this.

[This review was collected as part of a promotion.] I inherited my father in laws vehicle when he passed. It is a 1997. The Pennzoil High Mileage oil makes me feel like I give my vehicle the care my father in law woud be proud of.

[This review was collected as part of a promotion.] I bought a Saturn Vue with 73,000 mi on it. I now have 300,000 mi on my car. I contribute that to the changing of oil regularly and only using Pennzoil High Mileage oil. I couldn't be happier.

[This review was collected as part of a promotion.] I use Pennzoil products In everything that I have my truck is a 99 z71 257808 Miles on it thank you pennzoil

[This review was collected as part of a promotion.] I used a competitors brand for years but changed to Pennzoil when I seen Arnold Palmer commercial...I have been pleased ever since the change