Originally Posted By: Johnny
Originally Posted By: Steelhead
Delvac 1 same oil as M1 5W40 TDT just different container.
most truck shops/stops/service centers carry it.
try your local Autozone that is located in a commercial trucking area, they stock what the truckers want.
Two different formulations per Mobil. From their question and answer site.
Question:
Explain the Differences Between the Diesel Motor Oils
I noticed on your web site that the Mobil 1 Turbo Diesel Truck 5W-40 is rated CJ-4. I currently use Mobil Delvac 1 ESP 5W-40, which is also rated CJ-4 in my 2008 Chevrolet 2500HD Duramax Diesel. Are these two similar? What's the difference?
-- Alikhan xxxxx, Sherwood, AR
Answer:
Both products have different formulations and both exceed API CJ-4 requirements. Either product, however, can be used in your particular engine. Mobil 1 Turbo Diesel Truck 5W-40 is specifically formulated to provide outstanding protection to light-duty diesel-powered passenger vehicles. It also exceeds the requirements of API SM classification for gasoline engines. Mobil Delvac 1 ESP 5W-40 has been especially formulated for use in all super high performance diesel applications, and has engine builder approvals for the following:
• Cummins CES 20081
• Detroit Diesel Power Guard Oil Specification 93K218, 93K214
• Mack EO-O Premium Plus, EO-N Premium Plus 03
• Mercedes Benz 228.31, 228.3
• Volvo VDS-4, VDS-3, VDS-2
• Deutz DQC III-05
Yup, was the CI-4 versions that were identical. I stocked up on it.