I found that using this oil in my 1997 Camaro works the best. I tried every other hi mileage motor oils and no other stacks up to this one! The whole engine runs very smooth and it really quieted my valve train down. This oil is best for my ride I wouldn't trust anything else.

[This review was collected as part of a promotion.] I just started using this stuff for my 5.4 triton in my Ford. Before this I had a weird knocking noise I think from the hydraulic lifters. After switching the noise is either a)gone or b)so quiet im not worried about it. Great stuff.

[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.

[This review was collected as part of a promotion.] I've always been told to get Pennzoil for all my cars. High mileage works the best for me considering I drive 44 miles one way and have for over 20 yrs. Never a problem... you just stay loyal to some thing that's works.

I have a 1997 Chevy S-10 that has over 275,000 miles and I have been using Pennzoil since I bought the truck new with 8 miles on it. The truck runs great and I push it hard. If that isn't protection of the engine, then I don't know what is. I live in WV and I would not hesitate to get in my truck and take it anywhere.

[This review was collected as part of a promotion.] I have used this oil when I rebuild engines and the engines just keep on going. I have a few that are over 250k miles on them and they are still reliable and not burning any engine oil at all. I will continue to use this oil!

I use Pennzoil High Mileage Oil in my Ford Expedition! I use this vehicle to pull a car trailer and haul merchandise all the time. With Pennzoil High Mileage Oil, I know I don't have to worry about oil breakdown on hot summer days and also have protection on the Frigid Cold days!

Pennzoil has been the only oil I have ever used in my trucks, and our family cars for the past 58 years of driving. My second car was a 1962 Pontiac with 385,500 miles on it, and my 1995 F250 Ford that I drive now has, 288,950 and is still going strong! So thanks for making a very good product.

[This review was collected as part of a promotion.] This is the only oil I use in my old 98 dodge it's got 170000 miles now and is still a powerhouse now that Iv got my new truck (2004 f150) well new to me nothing's changed still use it every oil change

[This review was collected as part of a promotion.] I put this in my truck then went back and forth to work and did a lot of wheelin on the weekends for little over 8months when I changed it is wasn't like conventional oil it was still clearish and smelt great