Had an MDX in the shop. Signs of plugged heater cores (front and rear) and partially blocked rad (hot/cold spots).
Tried flushing with CLR, degreaser, citric acid to no avail. Ended up replacing both heater cores and the rad, along with a new thermostat and water valve.
Now that the job is done (ugh), I pulled the bottom tank off the rad, and found this residue. It is like a gritty, slimy jelly. The vehicle did have aftermarket, non Honda Type 2 coolant. No idea what it was, smelled terrible, was greenish in colour.
Anybody seen residue like this?
Tried flushing with CLR, degreaser, citric acid to no avail. Ended up replacing both heater cores and the rad, along with a new thermostat and water valve.
Now that the job is done (ugh), I pulled the bottom tank off the rad, and found this residue. It is like a gritty, slimy jelly. The vehicle did have aftermarket, non Honda Type 2 coolant. No idea what it was, smelled terrible, was greenish in colour.
Anybody seen residue like this?