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.

I use this in my grandfather's high mileage Kia that has to have a quart about every two weeks...I highly recommend this product I usually can catch it on sale at the Dollar general store for a 1 cheaper than other oils

This is a great product and I always feel that my engine is very protected with this brand. Has been using for many years with a lot of different vehicles they have never let me down. Will never switch to anything else.

We have always used Castrol GTX high mileage in our vehicles. We are more than satisfied as it has helped prolong life of our motor with routine Iloilo changes.

This is my go to product for my Jeep. Always choose this brand and this blend. Never have any issues and will continue to run this in my Jeep. Haven't had any issues with it and the price point is good too.

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.

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.

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.