ATF Fluid,It will do less harm that aggresive mechanical removal....it will disolve the sludge gradually, not in chunks/bits and pieces...
my 2 cents....


My GMC has a bad case of ship fitters disease!
GMC: Get More Cash...
1958 GMC
1956 Chevy 1500 Hydraulic Dump Truck
1952 Chevy 1700 3-Ton Firetruck

My Webshots photos