Hello.
Pls advise how many liters of coolant a disco3, year 2005 takes. I plan to flush it and i need to budget accordingly. I will factor in the mixing ration to determine how many liters to buy before mixing to fill the reservoir.

 

DexCool (OAT, orange stuff)
15L dry fill, 9.5L refill

I have rear AC, not sure if that affects capacity

 

It does affect the volume of the cooling system. Vehicle with rear heater should have a capacity of 12 liters and 9.3 liters for a vehicle without…… according to the workshop manual, I mean, for the D3 V8. I assume it’s not “dry fill” but that the engine block has several liters (15 - 9.5 = 5.5) inside it at all times.

The only reliable way, I guess, would to use a vacuum tool to suck absolutely everything out, then fill to proper level on side of expansion tank, etc.

🤷‍♂️🤯🥶

 

So . . . just buy 2gal of coolant, 2gal of distilled water, flush, then fill til its full. Leftovers for eventual topping up.

Bleeding properly is the real fun!

 

Tell me about it…. 😂😂😂

 

Amen.

All but guaranteed to have some air in there no matter how much bleeding. Plan on stopping 5 min into the 1st drive and burping it

 

Thanks to you all.
Its actually an HSE TDV6.
And for you to appreciate, let me add that i want to flush the coolant because i think i have been using low quality coolant for about 3yrs. I recently started topping uo like 250mls every 2-3 weeks which was never the case before. So, i think its the coolant evaporating because the mechanic says he can not see any leakage.

 

my radiator was weeping/crusting at the seam between end caps and body - no drips or puddles, very hard to notice.

 

In a properly sealed system, coolant can't evaporate out (unless you overheat and it vents out as steam). There has to be a leak or a head gasket issue if you're having to add to it that often. I'd do a rigorous visual inspection and a head gasket test.