Has anyone had success with a reverse heater core flush and maybe a radiator core flush soak?
I've done it 3x. Only got a few months out of each attempt. Also let it sit over night with phosphoric acid.
Finally I decided to eliminate the egr cooler loop, and replace the core, along with a healthy dousche of the block.
Before I installed the new core, and with the egr eliminated as a possible flow restriction from its own headaches, I took 5 gal buckets and hosed to each one, and fired up the car.
I used the pump to seriously flush the block/head/water jacket castings with zero effort, as doing this is on the inside of the closed thermostat, that little pump can surprisingly hose water.... One hose lead jumped out of the bucket around 2500.... I ran engine until one bucket was transferred into another temp isn't the concern, fluid transfer is. And continued feeding fresh water to it until it was totally clear and sediment stopped showing up.
In a perfect world the gallon per minute is much less since the core introduces its own restrictions in water flow. If it's clean with no core in the loop , then when installed I know the chances of crud to float to the core will be reduced.
Since the egr is eliminated for some hose room, I installed a ghetto garden hose strainer prior heated core. Ugly, probably because I did drunk, but catches anything and is removable sorta to clean the filter.
Now I'm running a ph balanced mix, of old school green, with some additives for aluminum.
Done. Half the price of the G-garbage, and no issues.
And please use distilled water for the final fill after the last drain......
Sent from my S-Off'ed HTC One...
