When changing the oil for 2004 Ford F250 are you supposed to also fill the oil filter chamber with oil?
I recently changed the oil and its where it shoulld be on the dipstick but is idling rough and loud. I'm trying to figure out why.

It's a good idea to prefill oil filters. Still, the total amount of oil should not exceed the amount called for; e.g. 15 quarts for the 7.3L PSD, including the oil filter. Best to use only full-synthetic diesel HDEO.

See if this link helps:

https://www.askmehelpdesk.com/cars-t...ml#post1415281

You may want to test your glow plugs, purge water, and change the fuel filter. Winter can be tough on diesels, but it doesn't have to be.

Read the other link on diesel fuel and cold weather, in the Sticky.