Although, the N54 engine has an all aluminum crankcase, many of the bolts are
still aluminum as on the N52.
This is to reduce any potential confusion between steel and aluminum bolts.
Some bolts, for example, are steel
such as the cylinder head cover bolts. This is possible, due to the plastic
cy
Principle
With the tire repair set, minor tire damage can be
sealed temporarily to enable continued driving.
General information
To enable continued driving, liquid sealant is
pumped into the tire, which hardens and
seals the damage from the inside.
Follow the instructions on using the tire rep