After moving the expansion tank to weld the aprons I lost a fair bit of coolant that looked in a bad state. After watching a Chris Fix of super flushing the coolant
https://youtu.be/s--5ft5YiHg I gave it a go:
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I used Holts Speedlush, red coolant and do-ironised water as the next best to distilled. You can see the difference the speed flush makes as the second cup is a lot murkier. The last cup was a flush with mixed coolant so the final would have been even brighter. I did replace the thermostat as preventative maintenance but the gasket on the Euro Car Parts product isn’t correct so has to re-use the old one. Also discovered the hard way not to undo the thermostat housing bolts when it’s all hot as they don’t come out and just spin - had to knock them out and use bolts and nuts i had lying around.
What I learnt specific to doing this on a transit:
- You only need 5L coolant/water to refill after each flush as about half of the 10L capacity stays in the engine unless you drain that as well.
- You can remove the small hoses at the top and back to the expansion tank to drain them by threading them down to the floor.
- If you remove the thermostat for flushing you will need to remove the rubber gasket from the thermostat and leave it in there or it’ll leak. was worried it might get sucked into the engine but that didn’t happen.
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While I was doing that I did some finishing jobs before the MOT tomorrow:
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