Local diesel shop in Reno runs a free air dryer test station

Stopped by Carson Valley Diesel to grab a fitting and noticed they set up a test bench for air dryers out back. They let me run my rig's unit through 20 cycles to check purge pressure, caught it dropping to 80 psi before I had an issue on the road. Cost me nothing but an hour, and the guy showed me the dried desiccant pellets vs the saturated ones side by side. Anyone else have a shop near them that offers free diag checks like this?

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