seafoaming

[05A$SE]

Im due for an AUDI CPO oil change on tuesday and i want to seafoam my car before i take it in. i looked under the hood and the only vacuum line i could clearly make out was for the brakes. so i was wondering if anyone has or could take a picture pointing out which line to use. i'm planning on doing the 1/3 in the tank, 1/3 in the crankcase the night before. and 1/3 in the morning cause i should do about 20-30 miles of driving before i get to the dealer. thanks for the help

[AudiA4_20T]

the one toward the front of the car on the intake manifold