The Ford Barn - View Single Post - Do You Guys Have to Let the Engine Warm Up Before Driving Away?

nkaminar · 05-08-2021, 12:42 PM

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The ethanol in today's gasoline requires a little richer mixture so it just may compensate for the difference in viscosity of today's fuel versus what was available in 1930. In any case you can adjust the mixture with the GAV.

At one time everyone would warm up their car before starting out. The thought was that the rich mixture used for starting would wash the oil off the cylinder walls. I also think it was because of the single grade oils available at the time. The oil had to come up to operating temperature.

05-08-2021, 12:42 PM	#6
nkaminar Senior Member Join Date: Jan 2012 Location: Western North Carolina Posts: 3,903	Re: Do You Guys Have to Let the Engine Warm Up Before Driving Away? Sponsored Links (Register now to hide all advertisements) The ethanol in today's gasoline requires a little richer mixture so it just may compensate for the difference in viscosity of today's fuel versus what was available in 1930. In any case you can adjust the mixture with the GAV. At one time everyone would warm up their car before starting out. The thought was that the rich mixture used for starting would wash the oil off the cylinder walls. I also think it was because of the single grade oils available at the time. The oil had to come up to operating temperature. __________________ A is for apple, green as the sky. Step on the gas, for tomorrow I die. Forget the brakes, they really don't work. The clutch always sticks, and starts with a jerk. My car grows red hair, and flies through the air. Driving's a blast, a blast from the past.