Oct 30, 2013 #31 SaltyDog Senior Member Joined Nov 11, 2007 Messages 251 On my boat it is possible to see a blue paper towel in any location that has ever leaked. The blue highlights even the smallest leak. Last edited: Oct 30, 2013
On my boat it is possible to see a blue paper towel in any location that has ever leaked. The blue highlights even the smallest leak.