Morning all!
Couple of weeks ago I replaced the radiator on my discovery, old one had about a dozen fins left on it and was leaking nicley!
Replaced it with a new rad (britpart from mm4x4). Whilst I had it out I flushed the engine with a hosepipe, after 15mins it was running nice and clean, also took the pipes off the heater matrix and got some nice brown water out of that before it ran clean. So all back together, filled and I was confident no airlocks anywhere.
Now been using the disco for a couple of weeks and it runs well, heater blows warm and engine warm-up time is sensible, havent done any long runs in it yet but I've been keeping an eye on coolant level and it hasn't budged and no leaks visable. My drive to work is about 7 miles so only just warmed up by the time I get in however I've noticed a couple of things and I'm not sure if they're to be expected;
top half of radiator is nice and warm, bottom half is cold oil cooler feed and return pipes are both cold
I know its only 7 miles but I'm not getting why the bottom of the rad is cold, I assume flow from rad is in at the top, then over to oil cooler on the right then back along to bottom hose on the left? Is 7 miles enough to open the oil thermostat? Placing hand on top of the engine and it feels a sensible temp and I'm confident I'm not over heating.. think it might be over cooling heh. Have checked coolant thermostat and it's working fine.
Shall I just find an excuse to blat it down the motorway for 20mins then check rad/cooler? mmm mm4x4 is about 30mins away, sure I could find something to buy when I get there!
Cheers,