Quote:
Originally Posted by Weather Spotter
The air density is also why rainy days are worst . Wet roads but all the water in the air makes it more dence.
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Humid days have lower density. Water, H20 has a molar mass of 18, nitrogen has 28 and oxygen 32, replacing N2 and O2 partial pressure with H2O lowers the air density. I agree kicking up all that spray lowers mpg, but Ive never measured it.
My SW1 and SW2 warmed up faster and got better mileage in the winter with hot air intake.