Using it in a semi tractor with cummins engine, with this oil and a bypass oil filter, i can extend the oil changes to 100,000 miles, well i do a oil test everytime i change bypass oil filter (every 10,000 miles), and so far the test returned showing oil in good condition.

Great price

Been trying for months to get moreT6. Luckily I had enough for my last oil change but I like keeping it on hand. I can not find why and when the shortage will end. Next change I will be looking for other brands

Great oil. Used it in my 97 dodge ram Gasser. Nice viscosity for the summer. 1 gal (4qts) and a qt of something else. Blends nice and makes the engine purr. Runs super quiet and not expensive

I have been using Rotella T6 5W40 in all my motors car, truck,tractor, motorcycle, lawnmower, generator and all small engines. never had a problem my Yamaha 1600 Roadstar also runs much cooler

I have found this oil to work extremely well in my 6.0 Ford Diesel. When I send a sample in to a lab for oil analysis, it always comes back in great shape, even at 6000 miles.

I buy the 5w-40 at the store, is fantastic oil. I run it in my 1999 Toyota Tacoma, Polaris Ranger and John Deere tractor. All 3 engines run quieter, cool and clean. Amazing oil. I may start running it in my lawnmower and generator as well.

I use it on my 2015 Eco-diesel with 84,000 miles. The oil gives me excellent MPG, I've gotten almost 34mpg on the highway 28-29 on the street. But the best part is getting money back and earning points!

This is the finest oil in the planet. After much research and forum's this oil out performs all others in almost every test possible. Walmart.com was the best price I could find with free shipping to my nearest Wally World

The oil was and is great! The delivery was on time but was short a container and Fedex busted a container when they dropped it on my porch. Walmart made it good but I have a stain on my porch that will remain long after the oil is gone.