Coolant question

[JBirc0014]

Hi all,

Just wondering what to make of this 'substance" I've found in the coolant resevoir and wondering if I can address by flushing system or do you think it requires further (professional) investigation...

[JBirc0014]

Hopefully these post

[JBirc0014]

Finally got the attachment tab to work...I think

[red90]

Do you know what colour of coolant it had? What vehicle and engine?

[JBirc0014]

No idea on original colour. Its a 97 defender 90 300tdi

[red90]

Unless something else seems wrong like there is gas bubbling out of the tank when the engine is running, I would run coolant flush and then drain and refill. Note that there is a drain for the engine on the left side.

[rgallant]

I am with Red90 flush and refill, coolant has a lifetime. If you go that route you know you have good coolant.

[bsa_m21]

Actually, it looks like you likely have a “long life organic” coolant. Check out this info link:

https://www.courant.com/sdut-coolant-co ... story.html

[ANDYD]

My old plastic coolant tank had those same frayed bits of plastic on the internal seam, so that's likely normal.

There is an Orange colour coolant/anti-freeze that turns darker like that. Like mentioned above, I would drain it, give it a good flush through and see how the new coolant looks after a few weeks.

[JBirc0014]

Appreciate the feedback and info. I will drain and refill this weekend. Had not considered the inner seam, on closer inspect this looks like it could be the culprit.

[InterMechanico]

Looks like healthy ELC coolant, Cat EC-1 Spec.

[Seekerbeta]

Unless something else seems wrong like there is gas bubbling out of the tank when the engine is running, I would run coolant flush and then drain and refill. Note that there is a drain for the engine on the left side.

now you tell me! after I made countless environmental disasters in my driveway!

[JBirc0014]

This guy seems to have figured out a workaround to the unfortunate placement of spill out to cross member.