Nasty looking stuff in coolant overflow tank

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Oct 12, 2015 | 03:25 PM

ryeguy

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From: SD

Nasty looking stuff in coolant overflow tank

Anyone know what this is?

Rust?

Thanks.

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Nasty looking stuff in coolant overflow tank-9230128319023.jpg

Oct 12, 2015 | 03:50 PM

Montego

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From: San Diego, CA

I forget what it is. But its pretty common and nothing to worry about IIRC.

Oct 12, 2015 | 03:51 PM

FührerTüner

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From: █▬█ █▄█ █▬█ █▄██▬█ █▄█ █▬█ █▄█

It looks like goo to me...

I had the same **** in my old NA. You can go to speedy or jiffy lube and they can flush the system for around 75 bucks.

Oct 12, 2015 | 03:52 PM

ryeguy

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From: SD

That's a relief, I was hoping it wasn't oil. Time to flush the coolant.

Oct 12, 2015 | 03:58 PM

Montego

Don't worry be happy...

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Quote:

Originally Posted by ryeguy

That's a relief, I was hoping it wasn't oil. Time to flush the coolant.

It could very likely be oil however it is nothing to worry about.

Quote:

Originally Posted by Fritz Flynn

Now back to your dipstick

It's perfectly normal and actually I'd give it a B+ grade for cleanliness.

Flushing your coolant is always a good idea but don't neglect to clean your overflow tank or better just buy a new one.

https://www.rx7club.com/3rd-generati...1/#post5899865

.

Oct 12, 2015 | 04:49 PM

96fd3s

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From: NZ

yep its normal. our cars are 20+ years old..
Just think if you ran coolant though an engine...poured the used coolant into a container - leave it to sit for anywhere from a couple of hours to couple of months...pour old coolant back into engine..run engine...repeat...change all the coolant every year or two..or five..

How do you think that container would look after 20+ years?