C-Class (W204) 2008 - 2014: C180K, C200K, C230, C280, C300, C350, C200CDI, C220CDI, C320CDI

Northern climate rust spray

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Old Nov 4, 2011 | 08:26 AM
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Norm01's Avatar
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From: Montreal, Canada
2011 E550 Coupe
Northern climate rust spray

What are your thoughts on having the W204 rust sprayed before winter. There are now many different formulas other than oil that they use. I would not under any circumstance let them drill holes in the car. Thinking of doing the underside and engine bay.
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Old Nov 4, 2011 | 08:50 AM
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The sophisticated rust-proofing on the W204 should be sufficient for many, many years of protection in areas like Montreal with lots of snow and salting.

However, if there is a lot of gravel where you regularly drive, putting a tar-based undercoating around the wheel wells, under the door sills and under the trunk will protect damage to the factory coating. While you are at it, do the trunk in the spare tire well and under the trunk carpeting, plus around the rear quarters. This will make the Benz much quieter. The shop performing this work must absolutely cover and protect any suspension and brake parts.
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Old Nov 4, 2011 | 03:12 PM
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1953 300 Adenauer, 1971 300 SEL 6.3, 1975 600, 1978 450 6.9
Originally Posted by Acapulco Bill
The sophisticated rust-proofing on the W204 should be sufficient for many, many years of protection in areas like Montreal with lots of snow and salting.

However, if there is a lot of gravel where you regularly drive, putting a tar-based undercoating around the wheel wells, under the door sills and under the trunk will protect damage to the factory coating. While you are at it, do the trunk in the spare tire well and under the trunk carpeting, plus around the rear quarters. This will make the Benz much quieter. The shop performing this work must absolutely cover and protect any suspension and brake parts.
However, you will likely void any rustthrough warranty from MB by adding any additional rustproofing. That tar based proofing was developed for cars prior to 1980 and traps moisture, actually increasing the probability of rust.

Leave it alone.
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Old Nov 4, 2011 | 03:18 PM
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@CEB - Guess I am out of date, does this also mean that sound deadeners like Dynamat or Fatmat also void a MB warranty?
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