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Rocketsled · 02-23-2016, 09:08 AM

Back in the 1950's and early 1960's at our Texaco we sold mostly Havoline HD 20W. The old timers used SAE 20 year 'round in Southcoast Mass.
When 10W-30 came out, it became an instant best-seller at $.75/qt.
Havoline HD sold for $.65 at our station and Texaco HD was $.50. Texaco ND was $.40 and oil from a drum, sold at the pumps in glass bottles was $.25 per quart. STP sold for $1.00 per pint!
I read where Model A engines were run in by electric motors before they went to the assembly line. Using a full, single oil type synthetic might not be appropriate. I would ask an engineer at Mobil for his opinion on what you intend to do.
Rocketsled-C.L.S.

02-23-2016, 09:08 AM	#41
Rocketsled Senior Member Join Date: May 2010 Location: Wakefield, N.H. USA Posts: 142	Re: A new look at a very old subject.. Oil. Back in the 1950's and early 1960's at our Texaco we sold mostly Havoline HD 20W. The old timers used SAE 20 year 'round in Southcoast Mass. When 10W-30 came out, it became an instant best-seller at $.75/qt. Havoline HD sold for $.65 at our station and Texaco HD was $.50. Texaco ND was $.40 and oil from a drum, sold at the pumps in glass bottles was $.25 per quart. STP sold for $1.00 per pint! I read where Model A engines were run in by electric motors before they went to the assembly line. Using a full, single oil type synthetic might not be appropriate. I would ask an engineer at Mobil for his opinion on what you intend to do. Rocketsled-C.L.S.