You know guys, I admire the chemistry and the work done here in testing and all but the simple thing is, as long as you maintain the car 100%, it'll work 100%.
Whether there's rust or not in the block, only determines how much more often you need to flush the cooling system. Let's take uponriversky's car as an example. He has rust in his block and is worried. So he would flush his coolant every 5,000km. My Wira has no rust and is clean throughout, I wait for 20,000km before flushing once.
That's all really.
And that's why it's crucial to use the right coolant because coolants have rust inhibitors built into the fluid and as long as you use distilled water, no minerals or whatever will react with the block or water to result in deposits or acidifying the water etc.
For those who have rusty bits now, if you can change it - just do it. If you can't change it (like the block) just flush what you can and do it in shorter intervals compared to the average Joe with no rust issues. That's all really. The block will super heat the water in the water jacket anyway and a hot block + oxygen = high chances of rusting will happen.
Whether there's rust or not in the block, only determines how much more often you need to flush the cooling system. Let's take uponriversky's car as an example. He has rust in his block and is worried. So he would flush his coolant every 5,000km. My Wira has no rust and is clean throughout, I wait for 20,000km before flushing once.
That's all really.
And that's why it's crucial to use the right coolant because coolants have rust inhibitors built into the fluid and as long as you use distilled water, no minerals or whatever will react with the block or water to result in deposits or acidifying the water etc.
For those who have rusty bits now, if you can change it - just do it. If you can't change it (like the block) just flush what you can and do it in shorter intervals compared to the average Joe with no rust issues. That's all really. The block will super heat the water in the water jacket anyway and a hot block + oxygen = high chances of rusting will happen.