I interested yet skeptical that anything I could add to the coolant would help it warm up, without some sort of trade off in cooling capacity.
I can have heat in 10 minutes also, just need to head straight out onto the highway at 55mph+.
Not one person reported not seeing a difference so far. I'd have to look through and see how many people bought the product but it's in multiple dozens.
The science behind surfectants used in antifreeze is not a new one. The idea is that by improving the surface tension of the antifreeze, you can improve thermal transfer.
I demonstrated in my vendor section through a screenshot that even with the coolant boost, on a Crown Vic, there was an over 30F gap between the cylinder head temp and the antifreeze temp. This is because thermal transfer is not instantaneous. What this does is close the gap between antifreeze temp and the engine block and cylinder head temp.
In reality, you are actually causing the *engine* to take longer to heat up, but the *antifreeze* is heating up more quickly. To you, it will appear as though the engine is warming up more quickly because the temp gauge measures antifreeze temp, not cylinder head temp.
The same improved thermal transfer then dissipates more heat through the heater core to bring you heat faster in the cabin.
In my car, the air is lukewarm by 110F. By 120F, it is positively warm and I can increase fan speed. Note: 120F is the "cold" mark on the temp gauge, and on a 20F day, I get heat in the cabin at that temperature. By 140F, I get comfortable heat.