Finish on propane cylinders?
So far as I have been able to find out, the factory never placed any finish on the Worthington aluminum tanks. In fact, when I had my tanks polished at P & S Trailer service, the Ruths discouraged plasticoating the finished tanks as it would be so difficult to maintain the integrity of the surface as the tanks were removed and replaced to facilitate filling. So far, annual surface maintenance with MetAll has maintained the shine on my tanks - - followed by a coat of Walbernize.
The Worthington Aluminum cylinders, however, were painted to match the hitch on Argosys if my one-owner original Minuet is any indicator.
Kevin D. Allen
WBCCI (Lifetime Member)/VAC/Free Wheelers #6359
1964 Overlander International/1999 GMC K2500 Suburban (7400 VORTEC/4.11 Differentials)
1978 Argosy Minuet 6.0 Metre/1975 Cadillac Eldorado Convertible (8.2 Liter V8/2.70 Final Drive)