Brown sludge isn’t what you want to see when you remove your car’s radiator cap to check its coolant level. The hope was that it was remnants of oil from its garage door opener comparison head-gasket failure rather than a new problem. I checked the dipstick and the oil-filler cap, but there were no signs of either water getting into the oil or of the oil level dropping.
The coolant level, too, was okay. The obvious place to start was therefore flushing out the radiator. Removing the radiator was easy, but once it was free it was obvious that assorted rubbish and grime had collected on it. garage door opener comparison must have been minimal, so I applied a little detergent to the muck and then poured hot water over it to loosen it all off.
It cleaned up nicely, so I moved on to back-flushing the radiator itself. Not surprisingly, it took some time for the water to run clean, but I left it for a few minutes and eventually it did. With the exception of the time we had to wait in a queue for the ferry while en route to the 2014 Le Mans Classic, the MG has never run even garage door opener comparison warm. Quite the opposite, in fact despite its horribly bunged-up radiator, the needle never really gets beyond one-third of the way up the gauge. While it was empty of coolant, therefore, I satisfied a quick bout of curiosity and checked that it did indeed have its thermostat in place.