I would just put in a caveate.....
Without a digital gauge of some kind I (IMHO) would not do a TOTAL block.
(just from a potential problem point of view)
My Kia Sportage got to 226 at 90% block.
this....notice 3 of 4 are blocked (bottom one is open) lower grille is 100%
then I removed the top.....
Temps only got as high as 220 and stayed around 205.
In my infiniti, 230 was the warning light
most car thermostates open at 18-185.
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