Just used my new Gill Pro Speed in the rain and mud today - boy it works well - no boil in the back effect!
I got back filthy so hand washed it with no detergent to be safe - instruction symbols say hand wash 30 degrees, and tumble dry only - fair does - but can/should I use detergent or will it strip out the proofing agent?
Any ideas - none in the info pack it came with?
Also - in time I assume it will need reproofing - again no info on this - what is the best way if required? Graingers 2 in 1 - this only references GoreTex
I've an eVent jacket and wash it at 40 deg on a synthetic cycle with Nik-Wax Tech Wash then drip dry or tumble on low heat. Been fine for the last 2 years.
You might need to replenish the DWR sometimes but Grangers or TX-Direct wash-in from Nik-Wax do the trick. I do mine about every 6 or so washes.
I've not seen that method offered before, I've always been lead to believe it was best to tumble dry ??? 
