Thoughts on long-term rust?

[Oldsmobile_Mike]

I know this is a hypothetical question, but the "reinforced underbody shield" vs the regular underbody protection (just plastic, right?). Any guesses as to which is more likely to trap water and rust out in the long term? Any thoughts on long-term rust for shield or frame?

Have seen too many Chevy box frames that don't have drain holes and get like this after a decade or so in the rust belt:

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[mabowden]

Whats rust? -someone from the southern california

 

[crashmtb]

Not worried.

and I own a Land Rover, a vehicle on which chassis are considered a consumable by people in its home market.

 

[Arky]

I'd assume their frames would probably be fine, modern cars don't have the issue quite as much, there's also a huge amount of aluminum used in exposed components that wouldn't be subject to rust so I expect this will do better than most normal cars.

The underbody covering protects frame parts from salt spray, we don't have exhaust piping, and almost all our suspension parts are forged aluminum. Rust shouldn't be a problem.

 

[R1Tom]

I am more concerned with aluminum coorsion. Have seen that on many aluminum automobile bodies over the past not too many years. And typically it isn't covered by manufactures since the warranty language is out if date and we all accept that as consumers. Says perforation I think, and that doesn't happen with aluminum. It just crawls around under paint, popping the paint off all over the place and looks terrible.

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