Quick rattling sound on startup

I've noticed a quick rattling/knocking noise on startup. It appears to happen on cold mornings and doesn't happen if I turn the engine off and back on. It also doesn't appear if I turn it on after work. At first I thought it was when I had the wipers on the night before and they did a sweep of the glass after starting the car. It doesn't sound like anything rattling in the cabin. (I have a hearing aid, so I pick up any high pitched sounds.)

The video link is from this morning. I will do a video on startup the next several days in case it appears.

https://youtu.be/KTbgWzxsJ4w

2011 Tacoma, extended cab, 4 cyl. engine.

The last oil change was a few weeks ago.

I've seen some discussions about the wrong type of oil and piston slap, but don't know if those are relevant or if there are other reasons. Any suggestions would be great, especially if I have to take it back to the shop that did the oil change. Thanks!

 

At least check the oil level first

 

Checked - the oil level looks like it's good.

 

That doesnt sound motor related to me. Have somebody lay under the vehicle while you keep starting it and shutting it off, pop the hood look under there and just listen.

 

It does not sound like cam phaser knock to to me.
But the description you give is how the cam phaser acts when it fails to lock on startup.

Again, your sound isn’t like the sound the phaser makes that I’ve heard.
But the ones I’ve heard were on the 4.0.

 

Never heard that before, but it doesnt sound like piston slap or phaser noise to me.

I would record under the hood next cold start.

Doesn't sound too bad.

 

Hi my 2011 Tacoma just started doing this, were you able to figure out what it was?