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

Amazing product I run it in everything!

So, I started using this product in my fleet since the Supreme 9000 5W-40 CJ-4 is not recommended for newer EGR/SCR equipped vehicles. Two things Ive noticed: 1. The oil stays cleaner much longer 2. The buses use much less DEF. Because this is made by Schaeffers, I trust that the durability will hold up and keep my equipment running for many miles.

I like its performance is very good oil

Read a lot of great things about this oil for use in my 6.0 PSD, just towed my travel trailer to Charleston SC and ran very well,oil temps alw a ys good even though we were in 95 ambient temps running 60-65 mph.

This oil company is the best in the biz!

One thing to point out this OTR 10W-30 is (0711CK4-006S) - which is a Semi-Synthetic... The (9012) OTR 10W-30 - (09012CK4-006S) is the 100% Full Synthetic - similar to the formulation of their 9000 5W-40 Full synthetic... I did not realize this until now - I spent 30min looking over Schaeffers website & finally found 2 types of OTR 10W-30... Just wanted to point this out - so buyers who prefer a 100% Full Synthetic was not mislead...

Only Received 11 qts was in a bag inside a box , no case

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.

I run this in my 2015 F250 6.7. They actually sent the correct oil this time. Change oil and filter every 5k miles.

For Hubbys stuff..