Td5 Coolant Drain Plug

**d2dave** · 16th September 2013, 10:09 AM

Originally Posted by OffTrack

Did you check the link to Anti-Freeze Concentration at step 5 of the refill procedure?

The Td5 specification is to make prepare 4 litres of OAT to 50% concentration, which means you end up with 8 litres of mixed coolant.

cheers
Paul

I am not using oat. I am using Cummins PG Platinum. Regardless of what I use, RAVE says to use coolant at a 50% ratio and to achieve this 4 litres is needed.

RAVE also says that the system holds 13 litres, but when doing a change only eight litres, which is where they get their figure of 4 litres of coolant.

Which in effect there is still 5 litres of whatever in the system.

As I ran plenty of water through it, this means that I have 5 litres of tap water left. The correct ratio of coolant could be achieved by adding six and a half litres, but you are still stuck with tap water instead of distilled.

And in my case my coolant is a ready to use straight, not mixed.

**OffTrack** · 16th September 2013, 12:27 PM

Originally Posted by Mr Whippy

I am not using oat. I am using Cummins PG Platinum. Regardless of what I use, RAVE says to use coolant at a 50% ratio and to achieve this 4 litres is needed.

RAVE also says that the system holds 13 litres, but when doing a change only eight litres, which is where they get their figure of 4 litres of coolant.

Which in effect there is still 5 litres of whatever in the system.

As I ran plenty of water through it, this means that I have 5 litres of tap water left. The correct ratio of coolant could be achieved by adding six and a half litres, but you are still stuck with tap water instead of distilled.

And in my case my coolant is a ready to use straight, not mixed.

I realise all that. The LR procedure gives a 30% concentration in the cooling system.

The RAVE instructions only say to "flush with water under low pressure". There is nothing stopping you flushing with distilled water and a pump of some kind. I'm guessing that LR expect that you are doing this in a workshop equipped with a power coolant flusher hence the admonition not to use high pressure.

When I last did a coolant change I basically did fill/run up to temp/drain cycles with rain water until the water drained clear, then topped up with coolant at 50% after the last drain. It took about 3 cycles to get a result but what ever was left in the system was very dilute.

cheers
Paul

**d2dave** · 16th September 2013, 01:24 PM

I ran enough water through that I am sure that there was no old coolant left. I did notice that a couple of my hoses were getting towards the end of their life. Some looked like the original from new.

So I will change these soon, and rather than save and reuse what coolant comes out, I will top up with new. This will help bring the coolant closer to full strength.

Being a reasonably priced coolant I don't mind, and as it is lifetime as well, it is cost effective.

Thread: Td5 Coolant Drain Plug

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