Need a fix for this:

DOT 5 has the highest boil point here is a chart. https://nasaspeed.news/wp-content/u...luid-Comparison-Boiling-Points-mfg-stated.pdf
A shield and the fluid with the highest boil point should take care of your fears.

Well sure, but it cannot be mixed with 3 or 4 so I didn't mention it. He would need to flush his entire system and probably replace things to run DOT5 from 3 or 4, so that would get expensive.