Td5 Coolant Drain Plug

[d2dave]

Does the Td5 have a drain for the engine block? I am about to do a coolant change. I have looked in RAVE but there is no mention of one.

[Yorkie]

do not think so, just the drain bolt on the lower coolant piping if you remove the splash trim.

[d2dave]

Yes I have found that and removed it. Does this also drain the block?

[Yorkie]

Sorry, no idea. Suppose if you flush through from there will be ok.

[Disco W.A]

I think it's behind the alternator

[Franz]

According to Rave there is a coolant jacket plug located on the left hand front side of the cylinder block.

[Franz]

When I said left hand side I meant looking from the front of the vehicle. According to Rave:

Cylinder cooling is achieved by water circulating through chambers in the engine block casting. A threaded coolant jacket plug is located at the front RH side of the cylinder block.

[d2dave]

Well I have just finished doing my coolant change. RAVE also says cooling capacity 13 litres but when doing a change 8 litres. 8 is what I got into it.

This ****es me off because it means that there is still 5 odd litres of undrained water still in it.

[gruntfuttock]

Yes there is a coolant drain plug on the engine, and it should be removed to flush all the old coolant out. But seeing that you have not done this, you just might get away with it like that, but I would be testing the PH of the coolant system just to be sure, you do not want it to get too acidic, test kits are available from REPCO etc. but remember the motor needs to be warm to get a good reading, not sure why though.

It is just a small bottle with some PH paper inside, follow the instructions

[OffTrack]

Well I have just finished doing my coolant change. RAVE also says cooling capacity 13 litres but when doing a change 8 litres. 8 is what I got into it.

This ****es me off because it means that there is still 5 odd litres of undrained water still in it.

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

[d2dave]

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]

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]

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.