coolant flush

[2late4u]

I am getting ready to do a coolant service on my 2014 3.6 176 k ,had it done yrs ago at the dealership  at 95 k,so was thinking I'd do a dump and fill but guess I'll do a flush as well Not having any problems with the temps or lack of heat problems but it is getting older as I am as well...after watching a few YouTube videos my god they put the drain plug in the worst place to get to ,you have to remove the front spoiler /air dam and also the left side fender well , but I did see one video where the guy points out that looking at the front left side thur the lower grill you will see the blue plug and he drilled a small hole so he could reach up with a screwdriver to loosen the drain plug,,and so I checked it out and thought hell yes way easier than removing all the plastic pushpins which most of them break as well I took a hole saw that I had and drilled a 2 inch hole and they it is easy access and when I am done I plan on putting some metal aluminum tape over the hole probally a couple of layers as well and then spray some black paint top cover the silver color...just wondering if I should bother with the flush like the dealerships do or do it ? what do you all think???? I already have the 2 gallons Mopar oat fluid and about 6 gallons of distilled water.....

[John/Horace]

Flushing is needed for sure if there are flakes of scale in the main dump of glycol. The only issue with flushing is the 1-2 quarts of old trapped glycol is displaced by distilled water now. So if you use 50\50 premix it's harder to get a good freeze point. But your not worried about that being in the south.

 

I just dumped 10 yr old original glycol in my ram hemi with around 90k miles. It was clean without visible scale, used low compressed air and pushed out an extra quart.  No flush, just new glycol afterwards; removed reservoir and really cleaned it well. You dump it because the corrosion additives wear out and the mix becomes acidic with low pH, less than 7, attacks aluminum.  I stick with the same factory OAT glycol, so flushing not essential. If changing type of glycol then you have to do distilled water flush, not optional.

[2late4u]

well I  got the coolant flush done today, flushed with distilled water 3 times ( I didn't do a power flush just drained the rad and refilled with water)did this 3 times and took it for a short drive in between each to get the thermostat to open, ran fairly clear on the last one so then refilled with distilled water and Mopar antifreeze, did this refill and dump 2 more times as well then refilled with final distilled water and Mopar coolant and took it for a long drive keeping an eye of the  temp level, checked the coolant bottle with a tester and looking great 4 balls a floating....just a bit low on the coolant bottle reservoir, ordered another bottle of the Mopar coolant to top it off and have some extra as well,,,,,was kind of messy doing it the way I did but it was a lot easier than dropping the front air dam and all the plastic crap... dealer had done the service back in 2021/23 so the fluid look really  good so I really didn't want to use any flush chemicals...