Are we talking radial engines....
			 
			 
			
		
		
		
			
			Hi Terry 
 
If it is a radial engine..... there must be some collective knowledge from the aircraft collectors./. restoration crowd....... 
 
Wonder what  Porter uses in his Spitfire...... or are they in the habit of retro fitting modern alloy bearings to be compatible with modern oil. 
 
A  lot of restoration magazines tech section are advocating using modern heavy duty diesel engine oil in all older (pre 60)  engines for its older zinc formulation and/or adding a zinc additive ........ some caution need to be exercise as some of the zinc additive fill not flow or surevive long through a modern low micron full flow oil filter. 
 
Or maybe they should be considering the synthetic oil invented/created by Agriculture Canada, Neatby Bldg on Carling... for WW II high output torpedo engines......  CANOLA oil.... 
 
CAN  
       Oil 
           Low 
                 Acid 
 
Also nice to make French fries. 
 
Bob C
		 
		
		
		
		
		
		
			
				__________________ 
				Bob Carriere....B.T.B 
C15a Cab 11 
Hammond, Ontario 
Canada
			 
		
		
		
		
		
	
	 |