Just a word of advice, stay away from red, orange ELC. Those types, dex cool, the stuff in the video, Cat ELC and a host of others will ruin the o-rings in the older systems. O-rings like in the oil cooler, the water rail jumpers and seals, etc. The rubber used in these old parts weren't designed for the ELC in use today.
When you change coolant, just make sure you get a low silicate type with or without SCAs. If you get w/o sca, you can buy additive bottles. Just make sure to use test strips so you don't over concentrate things.
I use this in everything, expensive, but it is good stuff,
https://www.cumminsfiltration.com/hybrid
I know, I sound like a Cummins salesman, but I see things daily and I see what this stuff DOESN'T do to systems. It mixes with anything, ethyl or propyl coolants, doesn't gel.
Even in engines that are made and designed to run red/orange ELC, like my Duramax, are compromised by these coolants. I had to do stats at 100k on my truck. When I took them out, the seal rubber was like snot from the red coolant. I refilled with the blue ES stuff.. At 130k when a W/P started leaking I checked the stats while the coolant was out. No goo on the rubber.