Shell Rotella T6 Full Synthetic 15W-40 Diesel Engine Oil (1-Gallon, Single Pack)

First delivery, the bottle cap had been cracked from mishandling I assume, and it leaked everywhere. I don't understand why they deliver something so messy. They left it on my stoop so the oil could leak on my new 20 thousand dollar 2 story paver stoop. So thank you for that Amazon delivery guy for ruining the finish of my pavers. We're going to have to replace the top pavers. I'm unbelievably annoyed by this. Amazon did replace the oil, so I'll only be out like 2000 dollars I guess.But back to the oil. This is the only oil that my 1987 Mercedes 300D will run on properly without lifter clatter. I recommend it to anyone who has an old diesel. My engine purrs like it's brand new.

Good stuff. Too bad Amazon half the time refunds my money because either them or the post office decides to destroy the bottle getting oil all over it and anything else I also ordered with it.I recommend ordering it separately just in case unless you like the hassle of many refunds. Still worth it. You can’t beat the price here.

Not all the T6 is rated for wet clutch. This 15W40 is. Good price, good oil, and have been using T6 for about 3 decades in various motorcycles. While it is rated for wet clutch, they do not have the seal. Not paying for the seal doesn't mean it isn't great. Not paying un-needed expenses saves us the additional cost.

About a year ago I switched to Shell Rotella Full Synthetic 15W-40 for my 1980 and 1981 Suzuki GS650 bikes. In my bikes and a lot of other Japanese-motorcycles the engine and transmission share the same oil-and I noticeable an improvement in shifting in both of my bikes, cooler running engines too. It’s substantially cheaper than most synthetic motorcycle oils. It has the MA rating and is widely available at Walmart, auto stores, and truck stops, or you can get it in one day with Amazon prime.

This is some good oil, but I had to keep adding it to my truck and tractor. If I use Delo, I never have to add between oil changes.