TX7 High Mileage Engine Treatment HM10020 Engine Oil

Excellent product

Ive used it for years great product

A must for every car with high mileage!

Put this in prior to a long trip of about 2000 miles and it did increase fuel efficiency. I think I'll be using it on every oil change.

Went through my high mileage engine like a water.

I have used this product for years. I know the folks that make this and they are the real deal. These guys have been and still are heavily involved in the nuts and bolts of NASCAR. That is where I first found this product in the late '90s. (Texas Motor Speedway) I use it every other or every third oil change and now that I found it here I will start buying it online. My Tacoma has 339k miles and runs like a new one. I also add a few ounces to my differential and my powersteering pump. Anything that can reduce friction this much helps.