Chemicals used for ice and snow removal and dust control can collect on the underbody. If these are not removed, corrosion and rust can develop on the underbody parts such as fuel lines, frame, floor pan, and exhaust system even though they have corrosion protection.
At least every spring, flush these materials from the underbody with plain water. Clean any areas where mud and debris can collect. Dirt packed in close areas of the frame should be loosened before being flushed.
Your dealer/retailer or an underbody car washing system can do this.
Finish Damage
Chemical Paint SpottingChevrolet Cobalt Service & Repair Manual. Drive Axle Assembly Leak, Inspection
A visual inspection must always
be performed to confirm the presence of aftermarket components, potential
collision damage, or areas of concern.
A rear-axle oil leak is easy to
miss. The axle works normally until it suddenly seizes up, the expensive
and possibly d ...