IMPORTANT: Install Helicoil thread inserts so that they are flush with the original thread!
NOTE: Damaged threads may be repaired with Helicoil thread inserts. Observe the PROCEDURE described in the example.
BMW X3 Service & Repair Manual > Body and Frame: Body corrosion protection
To comply with the six year warranty against rust, specially selected waxes
and additives produce an elastic,
temperature-proof,
corrosion inhibiting protectant. The corrosion protection thickness should
measure a
maximum of 30 microns, but can be varied as desired by repeating the spraying
...