I am really sorry and I really wish nobody had to deal with the coolant issue, but after doing two of these myself so far, holy cow is it a pain in the butt, I have to reflush my truck at the end of august. After doing the last one a couple weeks ago, I installed the peak flush& fill kit on the heater hose like I said in my video, and it went perfect, quick and painless. I used two plastic hose pinch clamps and moved them around on various places to force coolant through different tubes, I saw how if I didn't do that coolant would stay in certain areas of the system.
Now to be fair your dealer couldn't do that backyard mechanic stuff because they would be draining coolant and oil into the sewer, so its really difficult for them to get everything out using their EPA legal coolant suck and fill system,
But after doing these two engines, its my opinion I think the coolant is changing color due to an imbalance between the acid and the organic material, I noticed right when my coolant changed to the orange color, that's when my cooling system started dissinigrating. Now that's just my observation, and im not saying that's what is happening and don't run to the dealer, because as the first picture shows, that coolant is still purple,
But both the systems I repaired had the solder eaten away and one of the oil coolers had pot marks and was eaten in many places.
Im going to switch my coolant to the Low Tox antifreeze based on propelyne glycol instead of the OAT. But that's my truck, I do weird things to it.
