Gen3 Mitsubishi Montero Coolant Flush using Thermocure - Rusty Cooling System with no heat, fixed!

"Lucky", our 2004 Montero, had no heat coming out of any of the front dash vents except for the driver side. This is a symptom of a clogged front heater core, but rather than dig into a heater core replacement job, doing a coolant flush with a very aggressive cleaning agent like Thermocure was worth a shot - and it seems to have really delivered!
Products In This Video:
Genuine Mitsubishi Thermostat: lusooverland.com/VP-MMC-1305A191
Genuine Mitsubishi Lower Radiator Hose: lusooverland.com/VP-MMC-MR404...
Genuine Mitsubishi Upper Radiator Hose: lusooverland.com/VP-MMC-MR404...
Genuine Mitsubishi Radiator Hose Clamp: lusooverland.com/VP-MMC-MR404538
Genuine Mitsubishi Rear HVAC Coolant Tee Pipes: lusooverland.com/VP-MMC-MR958633
Genuine Mitsubishi: Radiator Cap: lusooverland.com/VP-MMC-MR968532
Coolant Reservoir: lusooverland.com/VP-LO-MR404879
Thermocure: amzn.to/4eC8AQ4
Spill-Free Radiator Funnel: amzn.to/3KZneTL
Concentrate Asian Vehicles Green Coolant/AntiFreeze: amzn.to/45Fw2aW
Temperature Gun: amzn.to/3XGofrs

[@ElijahDecker]

Cleaning vinegar and distilled water also works well as a cooling system flush.

[@dyardsale5475]

You are tenacious.

[@JohnnyBfromPeoria]

That stuff works great, I've used/suggested it many times.

[@Spriggs77]

Can you show how you replaced the two rear coolant T's that you mentioned at 13:08?

[@luso_overland]

kzbin.info/www/bejne/l6avm2xtjrdpbNU

[@xboxice2005]

Hey my hose have rust in them, is there a way to clean them out, im unable at this time to get the two hose.

[@luso_overland]

Sure, you could remove the hoses and soak them in vinegar for 24 hours and then take a plastic bristle brush and scrub out the insides of them.

[@blkcoupequattro]

Thermocure is non toxic, anything that came out of your engine is product of the iron oxides that dropped out, harmless to environment. Now any actual coolant is toxic, unless you use Sierra or Prestone Low Tox it's also safer for your cooling system as it does not become acidic like other coolants in 6 years or less, so if you spill some you don't need to worry about the implications it's base chemical is used in cosmetic products lol...... Oh yea Sierra, and LowTox Prestone is ok to use with aluminum engine parts....

[@luso_overland]

@@blkcoupequattro great info, thank you!

[@coreturkoane5570]

Not for nothing, if you change your coolant/antifreeze on time it would never break down like this and/or use water to top up!