[This review was collected as part of a promotion.] My 1999 Jeep Cherokee 4x4 has 260,000 miles and continues to run great with this oil. I think since my husband changes the oil regularly that Pennzoil High Mileage Oil will keep it running indefinitely.

[This review was collected as part of a promotion.] I usually carry 2 quarts in my car because my Prius eats oil weekly. Every 600-1200 miles I'm down at least two quarts so I depend on Penzoil High Mileage to get to the next change. I'll be dropping a new engine in it soon but Illalways use Penzoil.

I have been using this oil on an old rebuilt motor with approximately 140k miles. Ever since I blew my old one due to negligence, so I decided to start fresh with the type of oils I decide to put in my car. Pennzoil High Mileage for vehicles over 75k is just what I needed to maintain protection my "new" old engine. Even after 4-5k miles, I have yet to even burn 1 quart of oil due to its additives and seal conditioners.

[This review was collected as part of a promotion.] As a single woman, anything that keeps me away from the garage except racing is a good thing. This oil helps me to stretch my visits to the mechanic out and save time for pedicures and shopping and NASCAR races!

[This review was collected as part of a promotion.] I bought pennzoil high mileage oil a few weeks ago for the first time and I was so glad I did.With my car having high mileage,this pennzoil has worked great in it and have had no problems.I recommend this oil to anyone who has a high mileage car and is looking for a good,dependable oil!

[This review was collected as part of a promotion.] I use this in my 95 ford mustang with 125k+ miles. Ever since jiffy lube recommended it since my car has over 75k miles. I've noticed a great deal of improvement. Love this oil I use it all time. I recommend Pennzoil brand to every one and use it all the time.

[This review was collected as part of a promotion.] I've always had and bought older cars and trucks,just the way I like it. I've always been a fan of and bought the high mileage oil since Pennzoil came out with it. Never had an issue. It's a great product.

I've been using this in my truck ever since it hit 75,000 miles. Now, I'm pushing past 200,000 and it's still running like the day I bought it. I expect to get at least another 100,000 out of it, and I'm confident that Pennzoil High Mileage will get me there.

I can't afford brand new cars or trucks, due to fighting Cancer for past 9 years. So all my vehicles have high miles on them and I have always used Pennzoil's High Mileage Oil, to keep them maintained. Sold my last truck, a 2001 Chevy Silverado, with almost 300k miles on it, still running strong!

The bottom line here is that oil additives aren’t going to fix leaks. You’ll have to get those old seals replaced eventually. I wouldn’t pay a premium for high mileage oil, but if you have an old, abused engine and can get the oil at a good price, it won’t do any harm.