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Re: cleaning intercooler - here's how I cleaned mine[200/82] posted by Paul S. on
Wednesday, 25 November 1998, at 7:16 a.m.
Follow Don's advice:
1) Let drain well (remove the plug) at all angles.
2) Put the plug back in. Rinse with a pint or two of Naptha solvent (or other non hostile oil solvent per Don - DON'T ----- I WILL REPEAT------ DO NOT use Acetone, Toulene, MEK, etc - If you don't understand this part skip this step!!) Anyway rinse with Naptha solvent, then let it drain again. Repeat till it drains pretty clean.
3) Blow it out with water.
4) Put the plug back in. Pour in a goodly amount of Simple Green or citrus cleaner or some other cleaner that does not contain sodium hydroxide. DO NOT use Castrol Super Clean or Zep purple cleaner. These have sodium hydroxide that will etch aluminum. (Great cleaners btw, but NOT for aluminum intercoolers!!) So swish the safe cleaner around really well, rinse and repeat 'till the IC is clean.
5) Rinse really well with clean water, drain and blow as much water out as possible. Now you need to get it dry.
6) Put the plug back in. Pour a few pints of isopropyl alcohol (again no nasty solvents) in and swish around well. Repeat. Drain and blow dry.
Your new intercooler equiped car will thank you.
Paul USS Seive S.