Pennzoil High Mileage is what I use in my '84 Blazer and it has been doing a really great job, no knocks, pings or other noises, no sludge with oil changes and the engine runs like a top. If anyone were to ask me what I use, Pennzoil High Mileage would be my answer. To my knowledge(what we were told when we were given the Blazer) it still has the original engine, so with it being a possible 30 year old engine I know to use a high mileage oil and your oil is what I always use and I am really glad that you produce a High Mileage oil because I really would not like to switch to another brand. As far as I am concerned you have the best oil products on the market and always will have.

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.

Started using Pennzoil HiMi in my personal car and the difference was nearly instantaneous although Hemis are know to tick even when brand new this oil softened the tick and oil pressure ran much more in a range I liked. Being a mechanic and a auto repair shop owner that went from offering Valvoline to Pennzoil customers also notice the difference in their cars. Working on high end cars knowing their picky "oil choices" Pennzoil really works also if you own a Hemi V8 manufactured up to 2010 (example: 2000-2010) Do not use full synthetic ive seen plenty of Hemis come to an end early in life running synthetic I highly recommend Pennzoil Conventional and Conventional High Milage and all of Pennzoil motor oils

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.] 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 switched to pennzoil high mileage when you first came out with it several years ago,i have a 2002 chevy impala that has 207,000 miles and uses none between oil changes and always use your high mileage 5w30 for my car,nothing beats pennzoil for the best performance and and protection for my car i definetly recommend it for everyone with a vehicle with high mileage

[This review was collected as part of a promotion.] Currently my 2005 Dodge Durango has 130,000+ miles on it and I was thrilled to find Penzoil had a High Mileage formula when my Durango rolled about 75,000 miles. Shes still running smoothly, reliably and I have faith it will continue to do so for many more miles! Third Generation Penzoil Family!

[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 used Penzoil in my new car that I purchased in 2002. When the mileage rolled past 100,000 naturally I switched to the Penzoil formulated for high mileage engines. I sold that car to my niece with over 300,000 miles on it and she still drives it every day. Enough said.

[This review was collected as part of a promotion.] I had, up until two days ago, accomplished my regular oil changes with Pennzoil products ever since my 2002 Honda was new! My little silver Civic took its last ride, and repair costs are such that a little over 220 thousand miles are all it will see with me. I had been using your High Mileage 5/20, but am planning to convert to your synthetic line for my new 2016 Mitsubishi Outlander Sport. I also trust your lineup in my '65 Chevy C10, 2007 Buell Ulysses and my lawn tractor. Thank you for carrying me down the road efficiently, economically and safely.