Have an older, '63 pickup that has seen her days. This has allowed me to wait for an up coming rebuild. She runs smoother and burns less oil. Great stuff.

I use this product in my one ton gas truck. I like how the oil hardly looks dirty after 4000 miles. If I do alot of towing I change at 3000 miles. I like this product and I use your full synthetic in my car

[This review was collected as part of a promotion.] I recently switched to this engine oil. And I have to say that I am impressed. My acceleration is quicker. Runs quieter. And overall simply runs better.

I've always used Pennzoil as my number one oil to change out my truck and it has never let me down, not expensive and not cheaply made either, I will always use Pennzoil.

i have been using penzoil since i could open a hood.i use it in all my trucks,like my father did .it extends the life of my 36 year old ford motor ,i never have a concern about it not starting thanks to penzoil

[This review was collected as part of a promotion.] Began using Pennzoil High Mileage oil in my 1988 S10 when it reached 145k now with 215k it's still running fine. Go Pennzoil.

[This review was collected as part of a promotion.] I have a 1996 Saturn with oil consumption issues and I always put Pennzoil HM in my engine. Keeps it running like new every day.

[This review was collected as part of a promotion.] My husband uses this in alL our high mileage vehicles and he swears by it. He has a very old Chevy blazer that still runs great

[This review was collected as part of a promotion.] First thing that gets put into any used vehicle i buy. Always seem to improve the way they run and allows me to get max use out of vehicle!!

Started using high mileage in my 67 firebird convertible, I can tell an incredible improvement in compression and performance over standard motor oil!