clean spots on IC

[ihasnostang]

anyone have any ideas to get these spots off my intercooler? I've tried water, household cleaner, and tooth paste. not sure how they formed, car never saw a salty winter.

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[Siege]

That's weird, all I can think to recommend is aluminum brightener. I've used it on intake manifolds before and it did a good job at removing irregularities.

 

[VIPR01]

Vinegar/water works sometimes on aluminum, I’ve used Ospho with success on aluminum issues with caution - it reacts aggressive.

 

[Basspro302]

Polish it

 

[mrgooden]

Have you tried acid spray?

Richard

 

[DFB5.0]

As mentioned, you need an acid to stop the reaction .50/50 white vinegar and water should take care of it.

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