About a month ago I noticed that my coolant level was low (none in the overflow and too low in the rad to see/touch).
It hasn’t been a problem because the weather is sufficiently cold that my operating temperatures are all within spec according to live data from my OBDII reader / app.
I don’t see any leaks either; the low level is almost certainly because the system wasn’t burped / topped off after my radiator was replaced about 3 months ago (shop did it for me for free since they accidentally damaged my previous 2-year-old radiator).
Anyway, I’m waiting on a couple parts, including the heater valve, some heater hoses, thermostat, etc, and intend on doing a full coolant flush with distilled water and genuine Toyota Red at that time.
But in the mean time, I just wanted to top off with some Zerex Asian Vehicle Red 50/50.
Instead of dropping the skids and opening up the little petcock to see what coolant was used, I had just assumed there was Red or Pink coolant in there.
Well, as I was burping the system, the pink mix in my Lisle 24680 Spill-Free Funnel started turning yellow…
That doesn’t look very red to me! D’oh!!
Anyway, I’ll do a full distilled water flush and replace with genuine Toyota Red soon, while I’m replacing the heater valve, hoses, thermostat, etc. I don’t drive that much, it’s cold outside, and I don’t think anything will explode in the mean time.
Moral of this story: trust, but verify.
PS: if I’m wrong, and you think something WILL explode if I drive with Mystery Green and about 1.5-1.75 quarts of Zerex Asian Vehicle Red 50/50 mixed together, please let me know! I’m all ears