[This review was collected as part of a promotion.] I have bought this for my vehicle for the past five years my vehicle is running better since I've changed to this oil. My vehicle has 210,000 miles on it and runs of the day I bought it

[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.

[This review was collected as part of a promotion.] I use it both of my cars one has over 2 hundred thousand miles and the other has 1 hundred thousand miles

[This review was collected as part of a promotion.] I have been using this in my 05 Tahoe that has 175k on it the last two oil change and I tell ya I feel a difference in the get up and see the difference at the pump and the wallet

I only use Pennzoil High Mileage oil in all of our vehicles. We have classics and late models with over 230,000 miles on the and they still run perfect. Thanks Pennzoil!

I've had a minor valve gasket leak for a few years and this high mileage oil has kept the leaking to a minimum while keeping the engine running as normal as could be expected.

[This review was collected as part of a promotion.] I've used Pennzoil for years on my older cars and it has help extend the life of them by at least 4 years without having to rebuild the engine.

Tried the high mileage for my old pickup. Definitely noticed a difference. The engine ran smoother, a bit quieter, and I notice an improvement in throttle response. I would use this on all my high mileage vehicle.

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.

[This review was collected as part of a promotion.] Bought my very first truck everalot of miles on it for a 97,But put this in itand it runs like a knew truck,very happy..