PS: Another trick to run a bit cooler (other than a new radiator)
is to thin out the mix.
Pull a quart or 1.5 qts (1 qt approx 1L) of the coolant mix out of the rad.
Replace with distilled (or demineralized) water (NOT tap water!)
Put in a bottle of Redline water Wetter.
https://www.amazon.com/Red-Line-80204-W ... ter+wetter
This reduces the surface tension of the mix in your radiator. As a result bubbles will form less easy at the waterpump reducing cavitation which is good for flow and longevity of the pump.
And also less bubbles will form at the internal heat transfer fins.. which means better heat exchange.
This improves the efficiency of the radiator.
Since you increased the heat capacity of the radiator with thinning out the mix and takes it away form 50/50 a bit towards water.. say 60 %water and 40% ethylene glycol you in effect are runnig a larger radiator.
This will lower your boiling point a bit but that shouldnt be an issue.
This is an old street racer trick for those who supercharged or turbocharged their engines but couldn't fit (or afford) an upgraded aftermarket radiator)