Clr To Clean Out Heater Core

I am wondering if i can use some clr cleaner to help flush out any residue stuck in the heater core.

Clr to clean out heater core.

How to s on repair restoration detail and customization of jd. Have the other end in the bucket to collect the coolant and sediment that comes out of the heater core. Remove calcium lime deposits with old trick itm4x4 is a humble independent mechanical shop. It is the factory aluminum heater core and it appears to have zero issues no leak stains no bulging no corrosion evident of any kind.

I then poured an entire container of clr into the heater core until it started spilling on the opposite end of the heater core. Remove heater core inlet hose. You should know however that if you have a heater core that is plugged it may also be. And let it sit for a few hours.

Be prepared for some more coolant coming out. Same as the outlet hose gently twist and pull the hose off. I pulled the heater core and found it to look very good. Flushing the heater core can remove these clogs but if it fails to work you may need to have your heater core replaced.

And i plugged the bottom radiator hose inlet then i filled the entire radiator with straight clr topped it off with vinegar. Attach the longer section of tubing to heater core inlet. A clogged heater core will prevent the coolant from passing through it limiting the amount of heat that can be transferred. I attached the end of the garden hose back to the inlet side and i let the clr do its thing for about 30 mins.

Recently i heard about the idea about using clr to clean out a radiator so i purchased several bottles of clr and i disconnected the radiator hoses and drained the radiator.