[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!

[This review was collected as part of a promotion.] I have been using the high mileage in my tahoe for about 5 years now. After the first oil change I noticed the oil was not as dirty as before, so that means it is doing a better job than the Castrol that I used to put in. I am penny oil for life

[This review was collected as part of a promotion.] I have used the Pennzoil high mileage oil for quite sometime now. I ran it in my old GMC pickup truck which had well over 300K on it and it ran so smooth when I used this fine product of Pennzoil! I'm a believer!!!

[This review was collected as part of a promotion.] I've used a few different brand of High Mileage oil over the past few years but the Pennzoil High Mileage seems to just out preform all others I have tried. When I drop the drain plug around 3,000 miles to change, it still almost golden. And on top of that the truck really does run quieter and smoother. Hats off to the folks that developed this stuff.

I have a 2002 Chevy Tahoe with 259,328 miles on it. It burned about a quart every 1,500 miles. Every since I switched to this high mileage oil I have not lost any oil in about a 3,000 mile period. I’m actually going to make it through a oil change interval without adding oil....

[This review was collected as part of a promotion.] I've used many different brands of High Mileage Oil. I'm old school I change my oil myself. At oil changes I noticed that other brands of oil felt like canned lubricant oil. Towards the end of the oil change cycle my oil pressure would not be slightly lower than usual. When I used Pennzoil High Mileage Oil it felt the same coming out of the oil drain plug as it did when I poured it into the crank case. The oil pressure was never affected with Pennzoil. My brand of oil is Pennzoil simple as that. Always has been, always will be.

[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 only use this oil on my ford explorer 200K+ for milage and every time I change the oil it runs better every time and every day. I tell my friends to use it and they have converted from their perfered to this for everything.

Best decision we ever made,switching to the high mileage oil,when you drive around alot.We have alot of doctor's appointments,with three kids of different ages,and a sick wife,and soccer,youth group,chorus,choir,charity events,snow crew ,overtime.We do alot of high driving.

[This review was collected as part of a promotion.] My car has over 170k miles and I'm cheap so I refuse to buy a new one until it kicks the old rust bucket. I've been using this oil for the past few years and will continue to use it until I have a car with low mileage. Vehicle has no noticeable engine/oil related problems so if it ain't broke, don't fix it.