Prius 2010 Upper Radiator Hose?

Basically what happened was that I went ahead to get a BlueDevil. I drained the coolant and plug out the radiator hose going to the radiator which will go directly to the engine afterward. Ran the engine for about 50 mins. Drove it couple days at the city until it was about 54 miles. Then yesterday I brought it to a highway. After about 15 miles, it started to overheat. OBDII scanner showed me the coolant temperature was 111 Celcius. Pulled over, waited for one minute, and go again. I tried to drive as normal as possible to see if this is a one-time issue. Nope. It went up again. Now I'm frustrated. But, I haven't seen any check engine light came out for now since then.

 

Update: please note that there's no more leaking since when I open the reservoir, no vacuum (indicating fluid has been lost) sound going off. The engine will just overheat. But the system is not completely clogged since the coolant is still flowing back to the reservoir. The radiator fans are working.

 

Been driving it for approx. 500 miles. I just replaced the radiator. So far it works fine.

 

Last update: The check engine light hasn't come back again. It's been about 800 miles since I fixed it that way. I don't think it will last forever. I ordered a new radiator and replaced it. Everything runs as how it should. The old radiator is not broken. It's just clogged. If you can clean it up either by using a specific tool or bringing it to a mechanic, I believe it should work just fine.

 

New update: The check engine light came up soon after posting that. I did some research and found a mechanic that'd do the job for $1,400; a much better choice than the $3,000 price tag from nearby local mechanic and $3,800 from Toyota Official Dealer. I sent the car last week and is projected to be done anytime around Thursday / Friday this week. The warranty is 24 months/24,000 miles (I only expected the warranty to be 12/12, so this is a great deal). I will post the mechanic after I confirm the vehicle is perfectly fine and the work is done finely.

 

I'm at California. I sent it to a local mechanic about 30 miles away from my home.

 

50 miles update: I have been hearing some sort of noises created from loose bolts from under the engine bay. It makes that sound when going to a fairly uneven roads. I suspect the mechanic didn't really pay attention to bolt those properly. I went under and checked it just now. I found two loose bolts which I can even try to still fasten it a bit by fingers alone. I tighten them up and found that there are several missing clips and bolts. I'd try to figure out what to do next but I will do my best to at least spread around the bolts so it can maintain the panel just fine for the moment.

 

Regardless of that, only a small percentage of what is recommended (one bottle) is actually required. The extra liquid will keep cycling through the cooling system and no matter what you will end up with clogged radiator at least...

 

200 miles update: So I ended up bringing the car back to be checked for that disturbing noises. Apparently it was the windshield wiper panel (or so you can say that). It was loose and the mechanic found it to be the problem since I told them I had already fixed the splash panel. So far so good and no problem. We'll see when she hits 1,000 miles since the Blue Devil product lasted me for about 700 miles. If there's no problem, I will post it so that you guys can have your car repaired there since the price is way more competitive than those in Tracy.

 

Advance Auto $3,000 for the repair or $5,000 for engine swap (used engine with about 64K miles in it).
Toyota Dealer $3,800 for the repair
C & J Auto Repair $2,600 for the repair (he sounded pretty experienced but it was a bit too much for me).