Strange rattle when turning off my car

[motocross795]

Hey everybody this is my first post and kinda new to the audi world. About 3 months ago I started hearing a rattle when I turned off my engine. I changed the oil and it stopped for a couple of days. It did the same thing with my recent oil change, stopped for couple of days and came back. Any idea what this is, I'm always very nerves about the notorious timing chain repair. BTW my b7 s4 has 101k.

[kevinye77137]

I get the same rattle when i turn off my engine. What I do sometimes is to rev my engine alittle and then turn it off quickly. The rattle is gone. Probably there isnt enough oil pressure when engine is about to die.just my opinion