cypermethrin Posted April 4, 2012 Share Posted April 4, 2012 So I had the bright idea of changing the coolant on my 300tdi as a could not be sure that the local place that did the new water pump did not use the OAT stuff. Anyway i removed the bottom hose from the radiator and the two bleed screw on the thermostat and radiator and the cap from the reservoir and flushed them all out with a hose pipe for a good long while. refilling the radiator and flushing repeatdly etc. I know that the 300 tdi is supposedly a capacity of 11 litres in the 300 tdi - so why did the 5 litre of coolant go in no problem and then i only managed to get in a further 1.5 litres of water...... I followed the usual procedure of carefully fillinf thro expansion tank until radiator full and replaced screw, then the thermostat until full and add screw and then run until warm and top up. Ran until upto temp with heater matrix on and all levels OK So where is the other 4 litres hiding ?? In the heater matrix??? Quote Link to comment Share on other sites More sharing options...
landroversforever Posted April 4, 2012 Share Posted April 4, 2012 Is there not another drain plug in the main engine casting? My 200 has one. Quote Link to comment Share on other sites More sharing options...
cypermethrin Posted April 4, 2012 Author Share Posted April 4, 2012 That will be the one! Ta Is there not another drain plug in the main engine casting? My 200 has one. Quote Link to comment Share on other sites More sharing options...
landroversforever Posted April 4, 2012 Share Posted April 4, 2012 If its anywhere near the 200 position, its buried down behind the exhaust manifold. Quote Link to comment Share on other sites More sharing options...
pat_pending Posted April 4, 2012 Share Posted April 4, 2012 11litres is from a dry fill. There will always be some coolant left in the engine and the heater after a drain down. Pre mix it before you refill, that way whatever goes in is at the right strenth. Quote Link to comment Share on other sites More sharing options...
Retroanaconda Posted April 4, 2012 Share Posted April 4, 2012 What I do is flush the engine block with straight water, then connect it all back up and add the correct amount of antifreeze to end up with the correct ratio, and then top up with water until full. That way you always end up with the correct ratios of water/coolant. The coolant and water will be mixed nicely after a bit of running time Quote Link to comment Share on other sites More sharing options...
cypermethrin Posted April 4, 2012 Author Share Posted April 4, 2012 Thanks chaps.... Quote Link to comment Share on other sites More sharing options...
Jim1 Posted April 5, 2012 Share Posted April 5, 2012 My 300TDI does not have a drain plug on the block (can't find it looked all over) so can't drain the block. Drain what I can fill with 5l concentrate anti freeze top up with water. Then keep topped up with ready mixed anti freeze as required. No problem Quote Link to comment Share on other sites More sharing options...
landroversforever Posted April 5, 2012 Share Posted April 5, 2012 Are you sure Jim? On my 200tdi it was very well hidden down behind the turbo/exhaust. Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted April 5, 2012 Share Posted April 5, 2012 It's a brass bolt on the left hand side of the block from memory. EDIT: to add a picture of it, it's the bolt below the core plug, which is also the exact same spot for a 200tdi as well. Quote Link to comment Share on other sites More sharing options...
Reiny Posted April 5, 2012 Share Posted April 5, 2012 How easy is it to snap that drain plug? I'm petrified of trying to undo it. Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted April 5, 2012 Share Posted April 5, 2012 How easy is it to snap that drain plug? I'm petrified of trying to undo it. Hard to say really, mine undid fine without problems and looked like it had never been removed before .... I recall it being quite easy to remove, but that was 8 months ago and memory fades PS That was before the engine was painted hence the lack of marks in the picture. Quote Link to comment Share on other sites More sharing options...
landroversforever Posted April 5, 2012 Share Posted April 5, 2012 that looks a LOT easier to get to on the 300tdi! . mine is buried behind the turbo, probably made worse because it is a disco lump. Mine came undone without any fuss . Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted April 5, 2012 Share Posted April 5, 2012 that looks a LOT easier to get to on the 300tdi! . mine is buried behind the turbo, probably made worse because it is a disco lump. Mine came undone without any fuss . Yep, turbo air pipe is in the way on the 200 Quote Link to comment Share on other sites More sharing options...
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