The Rover-Landers of BC

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...

Hopefully these post

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

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

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

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.

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

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

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.

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.

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

red90 wrote: Wed Mar 17, 2021 5:12 am 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!

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