The Ford Barn - View Single Post - Engine Paint -- Inside

MikeK · 02-12-2015, 03:02 PM

Just the fact that it is presently wearing away in your engine should raise a big flag.

I've torn down lots of engines that have been 'improved' with glyptal. The red oxide is a fine abrasive (think crocus cloth) and the oil pump gears get prematurely worn as the stuff slowly dissolves away from the oil additive package. The red oxide fines, released as the oil package deteriorates the coating binder, go on to trash your bearings. In a model A, even with a filter, the rod bearings are dipper fed and will get the stuff in them.

The glyptal paint binder is exactly the type of organic material modern oil additive packages are designed to remove! It is not a catalytically cross-linked coating! Even if it were, why would you want to add a thermal barrier between the metal and the oil?

I'll take a pass on any block that has been adulterated with glyptal or any other type of coating/sealant.

02-12-2015, 03:02 PM	#3
MikeK Senior Member Join Date: May 2010 Location: Windy City Posts: 2,919	Re: Engine Paint -- Inside Just the fact that it is presently wearing away in your engine should raise a big flag. I've torn down lots of engines that have been 'improved' with glyptal. The red oxide is a fine abrasive (think crocus cloth) and the oil pump gears get prematurely worn as the stuff slowly dissolves away from the oil additive package. The red oxide fines, released as the oil package deteriorates the coating binder, go on to trash your bearings. In a model A, even with a filter, the rod bearings are dipper fed and will get the stuff in them. The glyptal paint binder is exactly the type of organic material modern oil additive packages are designed to remove! It is not a catalytically cross-linked coating! Even if it were, why would you want to add a thermal barrier between the metal and the oil? I'll take a pass on any block that has been adulterated with glyptal or any other type of coating/sealant.