I've used a product named , Skyco "Ospho". It's a phosphoric acid. Has worked real well, for me so far. Cost about $20, a gallon.


Spanky Hardy
Collector Of Fine Old G.M. COE Trucks & Antique Holmes Wreckers

1948 Chevrolet 5700 COE Holmes HD W35 Wrecker
In the Stovebolt Gallery
More pictures on Photobucket

1950 GMC 250 1-Ton
In the Stovebolt Gallery