This oil is excellent ! Have used it and continue to use it in all my Subi's (Subarus) with every oil change. I have owned 3 of them ! It provides the protection required by these high performance engines and more. Keep my engines run smoothly and clean ! Excellent choice and can't beat the price !

t This oil stays clear and clean in my 2012 Ram 2500 6.7l diesel longer than most other brands. My Ram has over 300k miles and still runs great. I change my oil every 5-6k miles along with the fuel filter and could surely could go longer between changes based on the way the oil looks.

Been very happy with the performance and protection this lubricant gives. Oil samples look good every time.

Been putting this in my 2020 F-350 6.7 diesel and it has been great! I tow most days for work so I knew I needed something heavy duty and the truck runs nice and smooth on this oil!

i used this in my semi truck and my personal diesels pickups for years never had a problem and engines are clean would highly recommend

best deal on quality diesel oil. 5W40 is good for winter. sure Amsoil is better but their price is ridiculous. this one is the best value and has been tested to prove that.

My husband has been using this oil on our Ford F350 for a while now and it’s the only one he likes. The engine runs smooth and quiet every time. We’ve had no issues at all and the quality is consistent. Definitely our go-to oil.

Great for 2.8l LWN Duramax diesel. Oil analysis shows excellent results.

I use it for my ford 6.7 and 5k OCI.

Do not buy online, comes in a huge loose bag with jugs just thrown loosely in, upside down, sideways, tossed around, which causes them to leak and make a mess!