2021 duramax oil questions/typewriter tick

[Goodyearwing1]

Hey bobs oil peeps.

I have a 2021 gmc 2500 duramax that has the normal typewriter tick with Fresh oil and goes away as I put miles on it. I think GM says it’s air bubbles popping around the crank.


I have been running amsoil 15w40 w/ amsoil filter….

Any thing better or recommended

 

[Dodgetracker]

Air bubbles popping around crank,,, that’s a good one.

 

[Goodyearwing1]

Air bubbles popping around crank,,, that’s a good one.

All of my (03-12 and 15) Duramax powered trucks have done this after the first oil change, tick slowly fades away as the oil gets some miles on it...

 

[kschachn]

It's not the oil nor the filter. And if it is "air bubbles popping around the crank" then that's not good. It means you're lubricating with air and not oil.

 

[Goodyearwing1]

It's not the oil nor the filter. And if it is "air bubbles popping around the crank" then that's not good. It means you're lubricating with air and not oil.

Google duramax typewriter tick and report back… it’s normal noise and seems more noticeable right after oil change….

Did it on my 2011,2015 and now 2020+ models

 

[kschachn]

Google duramax typewriter tick and report back… it’s normal noise and seems more noticeable right after oil change….

Did it on my 2011,2015 and now 2020+ models

Air is not a good lubricant for a crankshaft.

 

[Goodyearwing1]

Air is not a good lubricant for a crankshaft.

Understood. I might be off on it…. But what I was told

 

[Nesterenko]

All of my (03-12 and 15) Duramax powered trucks have done this after the first oil change, tick slowly fades away as the oil gets some miles on it...

Sounds like your engine is waiting for that good old TCB to kick in

 

[jesco88]

Hey bobs oil peeps.

I have a 2021 gmc 2500 duramax that has the normal typewriter tick with Fresh oil and goes away as I put miles on it. I think GM says it’s air bubbles popping around the crank.


I have been running amsoil 15w40 w/ amsoil filter….

Any thing better or recommended

Yeah I’ve tried Mobil 1 Delvac Extreme 15w40, Rotella T6 5w and 15w, doesn’t matter. I will always get that tick sound at idle in my 2021 L5P after an oil change. There was a TSB on it floating around and it doesn’t sound like anything to be concerned about.

 

[adam8833]

All Duramax generation engines seem to do this to some extent. My 2007 LBZ does it occasionally after the oil has been changed. The Duramax has been around for nearly 23 years now so this is nothing new or to be concerned about.