Tools and materials

WARNING: This page is about a different car, the 2016 Porsche Macan and 2015 Porsche Macan. However, it is still accessible from the selected car via links, so may be relevant.

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

The required pressure is set on the compressed gas bottle using the commercially available pressure gauge unit (pressure reducer). The commercially available compressed gas bottle must be filled only with approved leak-locating gases.
Air-spring strut filling unit VAS 6231 WE 1282 with air-spring filling unit; the connection is fitted between the pressure reducer and adapter. Perform the leak test using individual bursts of pressure.
K-Jetronic Tester WE 1291 adapter V.A.G 1318/11 for fitting on the fuel supply line.
Commercially available leak-locating spray for detecting gas leaks.

Approved leak-locating gases (test media)

Leak-locating gas (test medium)	Designation	Composition/purity
Helium He (gaseous, compressed)	4.6 (minimum quality) 5.0, etc. not balloon gas!	99.996 volume % (4.6) He 99.999 volume % (5.0) He
Forming gas	Forming gas 5	95% nitrogen N ₂ and 5% hydrogen H ₂