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Is This Electrolysis?

Old 03-08-2019, 09:08 PM
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Default Is This Electrolysis?

The Oil cooler is about 2 yrs. old., but due to my salt water boat being out of commission most of that time, it has less than 15 hours on it since new. Oil cooler on other engine, plus two trans coolers, which were all installed at same time, look fine. This wasn't anything like this less than a month ago. It happened in like two weeks, right after I replaced that oversized clamp below it (it had broken off).

Last edited by RufusNapkin; 03-08-2019 at 09:13 PM.
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Old 03-09-2019, 12:27 AM
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Looks more like corrosion from a leak to me.
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Old 03-09-2019, 12:36 AM
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Leaking hose. Clean and reassemble. Get the proper size hose clamps
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Old 03-09-2019, 03:03 AM
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Drown it with WD 40 when you finished !it stops corrosion !!
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Old 03-09-2019, 03:55 AM
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tunnies giving you BAD advice.
Never put a lubricant between a hose and fitting that is held on with hose claps.
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Old 03-09-2019, 04:00 AM
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Electrolysis on copper would be pink. Hose may have a small leak
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Old 03-09-2019, 04:14 AM
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Old 03-09-2019, 04:19 AM
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That is corrosion not electrolysis. The green is a reaction, needs to be wire brushed, painted, and reassembled. Looks like a leak of some sort. Never, ever use a oil based product on a hose connection. You can spray down most of the engine (not belts) with a anti corrosion spray.
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Old 03-09-2019, 04:24 AM
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Electrolysis would have pitting as well.
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Old 03-09-2019, 04:26 AM
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Originally Posted by tunnles View Post
Drown it with WD 40 when you finished !it stops corrosion !!
If you read he said after you have repaired. WD40 is just fine on motors. I've been doing it for over 30 years with good results. Only thing I avoid spraying down are the belt.
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