Quote:
Originally Posted by russwinchester
@Laird Scooby, just need to clarify something...
Going to try a reverse flush today. Sounds silly but in the method you mention removal of top rad hose, then hose in to rad (once stat removed) but no mention of bottom hose off...I assume this needs to come off for the coolant to get out?
Plus did you have a recommendation for EG coolant?
Thank you again
Russ
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Quote:
Originally Posted by Laird Scooby
4. Oil already suggested, if you use G48 concentrated (see above for discussion on what i found last night) then add some cooling system flush, Comma X-Stream is a good one, run the engine until warm (15-20 minutes) then allow to cool.
Remove the thermostat and refit the housing. Remove the top hose from the radiator and insert a garden hose (snug fit if it has a Hozelock style fitting on the end) and turn on, it will reverse flush the system. Leave it running for about 30 minutes or if it runs clear before that, another 5-10 minutes after running clear. The flushing water will come out of the stub on the top of the radiator.
Drain the majority of the water now in the system by removing the bottom hose from the rad then refit. Add 5L of concetrated antifreeze, fit a new 'stat and seal (use silicone grease on the rubber seal both in the groove inside for the 'stat and on the outside) cleaning the lands in the housings of any debris/corrosion to help with getting a good seal, refit the top hose to the rad and top up via the expansion tank with water and fit the cap. Start engine and run up to temperature, checking for leaks. Leave overnight to cool and check the level next morning before starting. Top up with water to the MIN mark on the tank if needed, refitting the cap tightly.
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You missed a few bits in my original method Russ - i've highlighted them and also added a comment as to how the water escapes during the flushing process - note this is a reverse flush to help remove sediment that would block things in the normal direction of flow.
Just to be clear, use the G48 concentrated when you refill, not before using the flushing agent! Reading it back, i can see there could be scope for confusing that!
Hope that clarifies everything!
