Always used in my '88 GMC Safari. Took me to 300,000 miles. Always had great lubricating properties. No build up. Engine tap stopped with this product.

I use this on every oil change. Been using it in my 2010 chevy malibu since it hit the 50k mark. Now its up into the 120's. Change it every 4k miles like clock work.

[This review was collected as part of a promotion.] My car is a 2000 and it has over 300,000 miles on it and counting because this is the only Oil/product we use. Every 3,000 miles faithfully. Always recommend this to other's.

[This review was collected as part of a promotion.] I started buying this for my high mileage vehicle and love it! Hopefully it helps make my vehicle last even longer!

[This review was collected as part of a promotion.] During some engine work was pleased how clean the insides were. There wasn't the sludge build up I have had in other engines.

[This review was collected as part of a promotion.] Love the high millage Pennzoil motr oil i drive a 79 chevy truck. It has served me well. I only use Pennzoil motor oil..great product

[This review was collected as part of a promotion.] I have been using Pennzoil in my truck and my mother in laws Honda CRV, been very happy with durability and dependability. There are many choices out there, but why not stay with the best, Pennzoil

[This review was collected as part of a promotion.] This is the only type I've ever used in my 2000 Durango. It's the best high mileage oil ever invented! We call it liquid gold! :)

[This review was collected as part of a promotion.] My vehicle has 216000 miles and it would use a good bit of oil between oil changes till I switched to the Penzoil high mileage oil.

I tried the high mileage oil for the first time. I noticed a slight difference in my car but nothing substantial. My car still runs great, and I might get a few extra miles to the gallon.