ULTRA 1PLUSSAE 5W-40 Full Synthetic Heavy-Duty Diesel Engine Oil - 5W 40 Motor Oil API CK-4/SN (5 Gallon Pail)

I still do my own oil changes. Very handy. My truck takes almost four gallons each change. My tractor four..then three cars. Way easier to stack and store than thirty gallon jugs.

Have used this for last several oil changes. This is the best value I can find that meets all the Gen 3 Ecodiesl requirements for Ram 1500 (2020).

Made in the USA and good value

GREAT VALUE

I recently used the Ultra1Plus SAE 5W-40 Full Synthetic Heavy-Duty Diesel Engine Oil for my truck, and I am extremely satisfied with the results. This motor oil meets the API CK-4/SN specifications, ensuring top-notch performance and reliability for heavy-duty diesel engines. The oil's full synthetic formulation provides excellent protection and lubrication, which has noticeably improved my engine's performance and efficiency.The cold start performance is exceptional, and the oil maintains its viscosity even in extreme temperatures, ensuring smooth operation and reduced wear on engine components. Additionally, the one-gallon size is convenient and provides great value for money.Overall, I highly recommend the Ultra1Plus SAE 5W-40 Full Synthetic Heavy-Duty Diesel Engine Oil to anyone looking for a high-quality, reliable motor oil for their diesel engines. It has exceeded my expectations in every way.

Manufactured down south in Houston tx very cool! Smells like oil, feels like oil, looks great and my Subaru is running just as good as any other synthetic 5-40’s i use! Overall seems like a quality oil.A little expensive for a 4qt jug but i usually just get whatever is on sale, the current price (28$) is inline with other high quality oils at this size.The stickers on the jug though, not great, front and back are partially peeled off by the time i got the jug. But that’s a small gripe!

Without being an independent laboratory and having the knowledge and equipment myself to test something like oil. I have to go on the specifications on the jug and just the general appearance, consistency, color and workability in my truck. All indications are that this is a great product. So far in my truck everything is running great as I would expect it to. I wouldn't hesitate to use this product again.

Ultra1Plus SAE 5W-40 Full Synthetic Heavy-Duty Diesel Engine Oil - 5W 40 Motor Oil API CK-4/SN (1 Gallon) (1 US Gallon (4 QTS))Ultra1Plus SAE 5W-40 Full Synthetic Heavy-Duty Diesel Engine Oil - 5W 40 Motor Oil API CK-4/SN (1 Gallon) (1 US Gallon (4 QTS))We live on a ranch and have backhoes, graders, loaders and lots of other heavy duty diesel equipment. This oil looks like a great blend of synthetic oils for diesel engines. It is made in USA, and top quality. The price is very good on this one gallon jug, so it’s a great value.