Schaeffer Manufacturing Co. 0700CK4-012 SynShield Durability Advantage 15W-40 Diesel Engine Oil, 12-Quart Bottle (Pack of 12)

Excellent oil, I used this in my 2015 f250 diesel, and the engine oil runs 8 degrees cooler than it did before. First time I actually seen a difference in an oil like this, really lived up to its name ,will buy it again.

Reproductor Muy Bueno pero noso responsables con la devolu cion de dinero

Swapped to schaeffers from Rotella 15w40 and noticed increased oil pressure, slightly better fuel economy, and a quite engine. I was quite impressed. Its really good oil, but... the downside is the price, I recommend going through a nearby sales rep as the prices are exponentially cheaper than buying from a 3rd party vendor such as Amazon, Napa, O Reillys etc.

Travel between Texas and Wisconsin several times a year. This oil has out performed all others hands down. My 2013 F-350 is a happy machine. Mileage Increased also by a mile per gallon.

Best oil on the market it’s the only oil I’ve used in my medium and heavy duty trucks.

Best oil on the market! Definitely quiets the engine valve train down and runs smoother. I’ll for sure purchase again!!

Put this in my 2005 6.0, she loves it. Definitely a different truck

All good

Use exclusively in my 2017 Ford 6.7 powerstroke. Great oil.

Its oil, and its contained, what else is there to say.