I've been having all my service done by a dealer using Motorcraft oil. I need to add oil in the morning and the dealer is closed till Monday. What commercially available engine oil is equivalent and compatible with the Motorcraft oil the dealer uses?

Thanks
Steve

 

You can buy the Motorcraft oil from Wal-Mart. Otherwise I would use Rotella.

 

If you really want to stick with the Motorcraft oil, you can get it off the shelf at Walmart. They sell Motorcraft brand oil and filters.

 

As stated above however any diesel api rated CJ-4 oil will be good to go.

 

When you switch brands of oil, you leave apprx. 3-4 quarts of the old oil in the system, so you are mixing oils at that point. Lots of people do it (switch oils that is)! As Mike said - any properly rated diesel oil will work.

 

The mobile synthetic worked good for me - if you want to pay the extra dollars

 

Here's a Dealership "thinker" for you.
When my truck was new and going through engine break-in, I ordered my oil from a Ford Dealership.
In those early days I used diesel 10w30. It was a special order item, so I was required to order it, to get it.
I got a call from the Dealership-your oil is ready for pick up. They agreed to hold it a few days (until Friday.)
Late Friday, I arrive at the Dealership. After searching, and noticing a team of service workers having a long discussion, the service manager admitted to me that it had been a busy oil change day. The workers had used my diesel rated oil in the cars that morning.
One worker even found the torn and empty cardboard containers marked for diesel engines.
The dealership did apologize to me. More oil was ordered.
My point....dealerships are not that grand.....sorry if i burst your bubble.

 

Been running Costco's (Warren Distr is the blender) 15W40 Diesel Oil ($10/gallon, CK-4/) in one of the Powerstroke diesels for over two years as a test -- doing just fine and way cheaper than Motorcraft (Conoco). I use more frequent change intervals (shorter than manufactured recommended) plus a Stiction Additive.

Have been running it over 3 yrs in a Cummins too -- smooth sailing there as well.

CK-4 Current API Service Category
CK-4 describes oils for use in high-speed four-stroke cycle diesel engines designed to meet 2017 model year on-highway and Tier 4 non-road exhaust emission standards as well as for previous model year diesel engines. These oils are formulated for use in all applications with diesel fuels ranging in sulfur content up to 500 ppm (0.05% by weight). However, the use of these oils with greater than 15 ppm (0.0015% by weight) sulfur fuel may impact exhaust aftertreatment system durability and/or oil drain interval. These oils are especially effective at sustaining emission control system durability where particulate filters and other advanced aftertreatment systems are used. API CK-4 oils are designed to provide enhanced protection against oil oxidation, viscosity loss due to shear, and oil aeration as well as protection against catalyst poisoning, particulate filter blocking, engine wear, piston deposits, degradation of low- and high-temperature properties, and soot-related viscosity increase. API CK-4 oils exceed the performance criteria of API CJ-4, CI-4 with CI-4 PLUS, CI-4, and CH-4 and can effectively lubricate engines calling for those API Service Categories. When using CK-4 oil with higher than 15 ppm sulfur fuel, consult the engine manufacturer for service interval recommendations.