I have been using Castrol for many years and I has kept our older cars running perfectly. The oldest has over 180000 miles on it and has no sludge buildup at all and runs so quiet you almost cannot hear it.

First off you have to have a vehicle to use this product. All you gotta do is unscrew the top off and pour the liquid in the engine where you have a screw cap that reads 710 remove the 710 cap before you pour. I guess I gotta talk about the benefits bout usin this product here we go. Your vehicle really needs this stuff to operate cuz one time I cleaned the inside of my engine cuz it was dirty and my brand new 2020 Ford truck wouldn't work. And by the way I hear Caster oil is coming out with a Pumpkin spice flavor this Fall and I'm eager to try it. Now is the time to tell you the bad stuff bout this product and when I find one I'll ya know.

This is a great oil to use on cars with high mileage. I have tried other brands of oil but have switch back because it doesn't work as well as Castro oil works. I would highly recommend this for older vehicles.

I use this oil in my car since I'm now over 200000 miles. It's not too expensive and my mechanic has no problem with it if I let don't change my oil within the recommended timeline.

Works great in keeping my husband's truck running smooth and steady. He drives a lot to and from work and it lasts a good while before needing changed.

No issues with this product and I've exclusively bought this brand for four years running. This is the only brand I buy and it's great for high mileage cars. Extends the life of your vehicle with regular oil changes.

I've used this brand since I've been driving and have always been satisfied with it's performance. My dad has also always used it and recommended it to me. It's not the lowest priced but it's less expensive than some other brands.

This is the only brand we trust for our high mileage vehicles. We've had several vehicles make it well past 300000 miles ensuring we only used this product and used it at every 5000 miles. The best option at an affordable price.

I use this in all my cars. Best oil made.. I've used this oil for years I won't put any other oil in my cars.. I've never had a problem with using this oil..I recommend this oil to everyone

Affordable fairly priced good oil. Better on an engine with higher miles on it. This is my go to oil whenever I do an oil change on any of my higher mileage vehicles. I would definitely recommend this.