I have used various brands of synthetic oils on my 2006 F250 super duty 6.0 diesel over the past 10 years. I have not had the injector ECM reflashed, and in cold weather the engine sometimes chugs until the oil warms up. I attribute this to injector solenoid sticking. This cold chugging was noticeably reduced when I changed to ROTELLA T6.

Anyone with a Ford 6.0 PowerStroke who lives in a climate where it gets below freezing knows the engine makes knocking noises and is loud & unresponsive when the engine is started in cold weather if the block heater has not been plugged in. With synthetic Rotella T6, though, the engine is much quieter, and does not require as much warm-up time as compared to using conventional oil. Even if one uses a block heater at home, most people don't have that luxury to keep their truck plugged in while at work. It sure makes the drive home quieter and faster, not having to let the engine warm up as much before hitting the road

We run it in gasoline-powered endurance race cars now. Same protection as Mobil1 0-40 we used to run, but way cheaper and more available. Once had a car come in with a badly warped head, no coolant, and boiling oil (coolant hose burst and the driver didn't notice) - over 10 minutes out on track without coolant! Still kept the rods in, no hard parts got damaged. Highly recommended! I use it in street diesels and my motorcycles, too - also works great there.

Great product for cheap. I run it in a 2001 twin turbo Audi V6 - 170K miles change at 10K miles, 2002 Nissan Pathfinder - 180K miles - changed at 5K miles, BMW R1200GSA motorcycle - 133K miles - changed at 4K miles. This oils exceeds all manufacturer's specifications, never had any issues. Last time I opened the valve covers on the bike it looked brand new in there at over 100K miles

I have a 05’ Chevy D max since new. Dino oil that came with it for the 10,000 break in and changed it with T6 ever since. C’mon, you cannot see what is happening inside you engine unless you break it down. The premise of using a good quality synthetic motor oil is based on the comfort that you WON’T have to break it down because you know that oil is making sure your engine is getting lubed. Diesel engines are quite expensive so putting the best oil in equates to as little wear as possible. I use a bypass oil filter (installed at 10,000 mile oil change) which gives my T6 the absolute best filtration. Engine has run great and, at 93k still sounds as new. Don’t even think twice about using T6 in your diesel. Everybody has their pet brand. For me it’s shell T6.

I been running this in all my cars and trucks, ATV for many years. My 2007 Chevy Cobalt I drive the most and it has 160,000 miles and I been running this oil since 60,000 miles, starts great in Minnesota winters and I never replaced anything except brakes

I have a Kawasaki 1500, model year 2000. I switched to this oil because someone with a similar motorcycle tried it and liked it. Major reason for me switching to this is because it was a full synthetic and very reasonably priced compared to other full synthetic motorcycle oils. I've put on 2000 miles since my oil change and I have started to notice severe clutch slippage. At first it was barely noticeable but as of right now, I have a hard time getting on the interstate without it slipping. Now, whether it is due to the recent oil change or some other Factor, I'm not sure if I would recommend this oil for anyone to use in a wet clutch motorcycle or not.

I am using this in my new John Deere tractor. It flows well in winter making cold starts easy. It’s is resistant to thermal breakdown as I have had this oil in my tractor long enough to see oil consumption is virtually non existent. You spend. Lot of money for a diesel so you want to make darn sure it hold up to hard use can throw at it; even with that, the oil has not changed color. Durability and longevity is what I want in my investment and Rotella will take me there!

Just bought a 2002 Kawasaki Concours motorcycle and the previous owner swears by this oil. Did some extensive research and online Concours forums questioning, this is THE stuff for improved cold starts, better shifting, and overall performance. Try buying full synthetic from motorcycle shop for anywhere near what Walmart is charging for this oil!

I have a 2016 F250 with the 6.7L Diesel motor and I use Rotella T6 every 6K miles. I use the truck to tow a two horse trailer and it never has any issue with getting hot or excessive fuel consumption. At the oil change interval I inspect the oil coming out of the oil pan and it still has a good viscosity to it as well as it doesn't smell burnt. I will continue to use this oil until I either get a new truck or the tires fall of this one!