94 940 Turbo White Residue around turbo mount????

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Mar 4, 2015 | 02:46 PM

240nc

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94 940 Turbo White Residue around turbo mount????

I have seen this on my Turbo mount where it bolts to the head .... it's a White power residue - what is this from? has anyone else had this or knows what it is from?

Mar 4, 2015 | 03:35 PM

pierce

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From: 37 North on the left coast

sounds like metal oxides from electrolysis, although I suppose it could be coolant residue.

Mar 4, 2015 | 04:05 PM

240nc

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Quote:

Originally Posted by pierce

sounds like metal oxides from electrolysis, although I suppose it could be coolant residue.

One tech said it could be from running lean and heating turbo .. I did pull a small trailer in the mountains and it worked Kind of hard ... dont have any white smoke or any other signs

Mar 4, 2015 | 07:49 PM

lev

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It's water traces residue. When you start the car quite a bit of vapor water immediately materializes, then it dries and over time shows up like white powder-- don't worry if there are no other signs.