Well, I finally got round to doing the fluid change today, and have to say it was not a bad job.
I spent an hour or two making up adapters to connect a couple of short lengths of garden hose to the caravan heating pipes (22 to 15mm end flow reducers fit perfectly) and used an old Whale pump to push the fluid through; the actual flushing and refilling took about an hour.
Bleeding the system was a little difficult as the height difference between the header tank and the top of the bathroom towel rail is only about a foot, so there was very little head to push the trapped air out, but a little perseverance saw it done.
In total, I used 15 Ltrs of deionised water (Wilko’s, £1.25/ 2.5 ltr) and 5 ltrs G13 antifreeze from my local motor factors (11.60) to complete the flush and refill.
Caravan dealers are charging up to £200 to do the job.
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2018 V90CC D4, 2022 XC40
1940 Matchless G3, 1980 Moto Guzzi T3
Coming soon:- 1947Rover 14 P2
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