The Ford Barn

keith oh · 06-30-2013, 10:42 AM

The greatest amount of wear is in the first few seconds after start up. The faster oil gets to the moving parts of an engine the less wear. One reason Diesel engines last longer is because thier fuel is Oil and therefor are lubricated from startup. So it stands to reason thiner viscosity oil is desirable. If an engine has not been run for a while (a day or more) then leave the ignition off and turn it over for 10 or 15 seconds. Then after 20 or 30 seconds, to let the starter cool, start it. That is why I think installing a stand by Electric fuel pump, just to prime the engine for a quick start after setting for a while, is actually harmful.

06-30-2013, 10:42 AM	#22
keith oh Senior Member Join Date: May 2010 Location: Millersport, central ohio Posts: 668	Re: What should I use for oil in 40 Ford flathead? The greatest amount of wear is in the first few seconds after start up. The faster oil gets to the moving parts of an engine the less wear. One reason Diesel engines last longer is because thier fuel is Oil and therefor are lubricated from startup. So it stands to reason thiner viscosity oil is desirable. If an engine has not been run for a while (a day or more) then leave the ignition off and turn it over for 10 or 15 seconds. Then after 20 or 30 seconds, to let the starter cool, start it. That is why I think installing a stand by Electric fuel pump, just to prime the engine for a quick start after setting for a while, is actually harmful.