11 quarts to fill my truck after oil change

[4welynn]

On my 22 duramax, it takes almost 11 qts. I inquired on another forum, there was a few that said their duramax takes more than 10 qts.

[redwngr]

On 5/20/2025 at 5:57 PM, 64BAwagon said:

I recently changed the oil in my new 2025 L5P Duramax along with a new PF63 filter. It took 11 qts to get the dipstick to read at the top of the full mark. I thought this was a 10 qt engine ? Could it be that the pan was revised for a more thorough drain ? Banks has been making a big deal out of the pan not draining completely. 

Anyone else notice this ? 

 

Did you check the level after the had been run and then sat overnight (or at least for a few hours) 

 

Dmax is notorious for taking a long time to drain down. 

[64BAwagon]

Yes, I checked it a number of times including the next morning and it was still low until I added another qt. I guess I will know for sure in the spring when I change it again.