Have used this oil for 20 years to maintain three successive Sierra 3500 Duramaxes. I noted an improvement in mileage when I first switched over and have never experienced a single wear related engine issue even beyond 200,000 miles.

I use this oil in my Cub Cadet with a Kawasaki engine and it works great. Covers all temperatures from 100 degree summers to 0 degree winters. Stop using crappy car motor oil and switch to Rotella T6. You won't regret it.

Ive bought countless gallons of this oil for my 2 motorcycles. I run this oil in a 1994 Ninja ZX6E, 2012 KLX250S. Both run flawless. It provides amazing wet clutch shifting. My ZX6E when I bought it had Mobil 1 10W-40 in it before and my 2nd gear often slipped a lot. I was worried big time I bought a junker. Swapped out the oil with some Rotella and well 2 years later that slipping never occured again. Ive completely forgotten that ever happened now and its been a strong runner ever since. Solid oil that constantly impresses me in all my bikes. I recently had a valve adjustment done on that ZX6E and the mechanics were very impressed with the cleanliness of the motor. Keep in mind that motor is 20yrs old and has had 75,000 miles on it. Thats not a lot for a motor but few bikes ever see that number. With Rotella I easily have a 100,000+ mile motorcycle on my hands. Im sticking with Rotella as long as I ride motorcycles and ya of course the price keeps me coming back for more and more. If you ride a motorcycle..... and I mean any motorcycle currently on the market you owe it to your bike and wallet to buy this very hard proven oil.

Love this oil in my ATV. Turns smooth as silk. Some may question, why it's a diesel oil. Why you putting that in a quad. Trust me its JASO certified. Which is why I use it. Check it out and read up on all the reviews. YouTube has alot on this oil for motorcycle oil. I highly recommend

I have been studying everything I can get my hands on pertaining to oil and I am convinced Shell who lena Pennzoil and Quakerstate as well as Rotella line of oil has teacher a far superior oils for piston drive motors then anyone else. Because of my finding , I will be using only Shell oils in all my fleet of vehicle s.

Synthetic oil is always best for you vehicle. The Rotella T-6 has finally been added to Fords approved list of oils. In 2017 many vehicle manufacturers changed acceptable rating for approved oils and after much debate over the matter T-6 was added to Fords list.

I use T6 5W-40 for all non catalyst engines from small engines to tractors and older gas trucks. I live in ND where the temps range from -30F to 100F in a season and this oil has performed excellent in both gas and diesels. The only thing that sucks is the ZDDP will smoke o2 sensors in newer vehicles so I quit using it there. Nice to have one oil do the job of three.

I've been using T6 in my 2005 Kawasaki Vulcan 1500 after my first oil change, this oil takes the heat and keeps the inside of the motor spotless. No clutch slippage at all. The perfect oil weight to get into the tight clearances and reduce the 50w power and mileage rober.

After hearing and reading rave reviews on this oil, and reading posts about it on oil-focused sites and forums, I thought I would give it a try. Im running it in my 04 Grand Caravan with the 3.3L V6. Running a half-and-half mix of 5w-40 and 15w-40. Let me say this, my van has never ran so well just by changing the brand and type of oil I am using. It currently has 209k on it and runs like a top. I switched to diesel oil because it has a higher film strength, better wear packs, and better detergent packs than gas oil does. I want my van to run as long as possible. I am one of those people that drives a vehicle until the wheels fall off, so they say. Ive used other brands before and they have worked well, however, since changing to Rotella T6, my van has more power and response than I ever remember it having. Rotella and other Shell products will be my only brand now. Stocked up on quite a bit of Rotella in all its major types, T4, T5, T6.

Have been running T-6 5W40 since 2011. Never had an issue getting the oil. Now I have had my first oil change in my 6.7 PSD and had to use Mobil Diesel oil. 5,000 miles in and can hear a difference in the sound of the engine. So, shell when I get my oil sample back will you still honor your engine warrant since I was not able to get your oil ? Yes seriously I miss your oil and hurry the heck up and get t-6 to us!!