coolant

Ride home from work today, parked outside garage , noticed coolant leak.Expansion tank was still full, but checked the rad, it was half empty! Seems to be leaking from pipe just behind exhaust downpipes.Not been on this forum for a while , but think i remember a thread on something similar....TT...

noticed my coolant was getting low, though its really hard to see the level!, what coolant does everyone use? what mix and how often do you find you need to top up?

....when I was going up a fairly long hill(2miles ish). Was on for about a minute. Pulled in then it went off itself without turning engine off. Coolant level ok and temperature ok. Carried on for another 10 miles or so till I get home and again checked everything but all seems well. Anyone else...

ran it up this morning, after I'd washed yesterdays shite off, for less than 2 minutes and I noticed coolant dripping out the waterpump inlet hose coupling, anyone else had this ? yes... warranty claim I know, but curious whether anyone else has had this problem ?