2.2 Cavity Preservation Of Aluminium Parts
WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2015 BMW Alpina B7L xDrive, 2015 BMW Alpina B7 xDrive, 2015 BMW 750i xDrive, 2015 BMW 750Li xDrive, and 2015 BMW 740Li xDrive. However, it is still accessible from the selected car via links, so may be relevant.
New doors, lids and side panels made of aluminium are not sealed with cavity protection agent.
After all straightening work on aluminium components, the cavities affected must be sealed with cavity protection agent after being painted.
After all welding work (E52 only) on aluminium components, the cavities affected must be sealed with cavity protection agent after being painted.
Cavities, seams and folds formed from new sheet-metal parts must be sealed with cavity protection agent after being painted.