I run t5 in my high output daily Cummins and it definitely shows up for the job. 96k on the engine and she doesn’t burn a drop even at the 3500k oil change mark. In 20 degrees she’ll start right up with low top end noise. Keeps her running cool. Definitely thinking about going to t6 next oil change!

I've been using t5/t6 oil since I bought my diesel truck. I have had the truck for a little over a year with no problems. Sounds crazy but the way the truck ran after a fresh oil change using t5 was noticeable. I have a landscape/lawncare business. My truck gets driven hard, and I put a lot of miles on her every year. Rotella stands the hard wear and tear. Will always use Rotella on my vehicle.

I Use Shell Rotella Synthetic Blend 15W-40 in my Wakesurf boat. The engines in these boats take a beating. Heavy loads at high RPM's, (3000) and only moving at 10 MPH, need an oil than can withstand the heat! Looking at upgrading to Full Synthetic on my next Oil & Filter Change

First time I ever put this in my 2006 vw jetta with the Diesel engine with 220,000 miles and I've never heard the engine idle so quiet at highway speeds and with the low ash it gives, I never have to worry about blocking up my cat like the other oils

I used the Rotella products for decades in my trucking companies. ( & my personal diesel pickups.) In Millions of miles for semi-trucks, using oil testing labs to continually monitor oils, I was able to extend oil drain intervals significantly. In all those years I NEVER had ONE oil related failure or indication!! One such truck I took out of commercial service & continued to use it for personal use for 7 more years. I sold it with 972k miles, & Still had never needed to do an engine overhaul!! ( that was with NON synthetic oil ) Now that synthetics are available, my personal trucks use this exclusively!! I grew up in Northern NY, on the Canadian border, & value the cold weather performance of synthetics even more.

Awesome oil. Got at a good price

the oil is leaking out of the containers, I tried to upload pictures but was unable to

[This review was collected as part of a promotion.] Great price on the oil I use

This oil is good for any diesel truck and Sam’s offer free deliver to plus members.

great price for a great product