Motorcraft 10W-30 super duty diesel oil change intervals

[leoblack9]

It meets WSS-M2C171-F1 and it says in the technical sheet and API website that it passes CK-4 so I plan to use it in my Isuzu Ute which calls for CH4/CI4. I have no idea if this oil is synthetic of full synthetic so I'd like to ask how long do ford truckers use this oil before changing?

 

[Bighorn2500]

That Motorcraft is probably a synthetic blend.

Run it till your oil life indicator tells you to change it, or just go by the manuals interval recommendation then get a used sample to send for analysis to see how it’s holding up.

 

[SureshR]

That Motorcraft is probably a synthetic blend.

Run it till your oil life indicator tells you to change it, or just go by the manuals interval recommendation then get a used sample to send for analysis to see how it’s holding up.

Says "premium hydroprocessed base oils" here. Group III synthetic I guess. https://www.motorcraft.com/us/en_us.../sae-10w-30-super-duty-diesel-motor-oils.html