"a steady diet of 240" See, that's the what gets lost in translation in this biz. I had two 50' sections of Parflex that got 240-250 ATM with no fluctuation and one of them failed (at the machine) after approx 1 month; 240-250 degrees and 500 psi. On commercial tile jobs I blew brand new Goodyear steel braided with 250 degrees and 1,200-1,300 psi. It's not junk hose, just not engineered for high temp continuous and 1k psi and above. For a year on my commercial tile I went to 3/8" high temp pressure washer hose and my problems went away. I'm sure everyone experiences something different but a will say that average truck mounts don't stay max'd out at their rated temps (like 220-240) especially when you start hopping on the triggers whether it be wands or rotaries.