[This review was collected as part of a promotion.] I use this product at work. I maintain large fleet of vehicles.

I had a 1994 Ford Explorer 4x4. Thanks to Pennzoil High Mileage I drove her past the 300,000 mark with not a puff of smoke !!

[This review was collected as part of a promotion.] great new, old,high mile ,less sludge and reduce leaks

[This review was collected as part of a promotion.] Ive allways purchased this item and have been very pleased with it performance

I have a Cehevy Tahoe with over 300,000 miles. I still run 48lbs oil pressure due to Penzoil High Millage Oil. I'm sold big time!

I have a 93 F150 with 254,000 miles on it. I started using this and I have less burn off than before.

[This review was collected as part of a promotion.] Definitely one of the best for your high mileage vehicle.

I use the long life oil in my 2002 6.0 ltr GMC Denali with 270,000 miles and still runs storm to this day.

[This review was collected as part of a promotion.] Has kept my 1999 GMC Sierra running, just past 261000 miles

[This review was collected as part of a promotion.] Keeps my truck going over 200,000,works great in cold wearher