WASHINGTON – WTOP’s Pain in the Gas Survey shows that prices are down again.

A gallon of regular gasoline dropped 7 cents to $3.57 while mid-grade fell 9 cents to $3.77. Premium also slid down 8 cents to $3.95.

A gallon of diesel went up 8 cents to $4.09 a gallon.

One year ago, on Nov. 10, WTOP found the price for a gallon of regular gasoline was $3.46, mid-grade was $3.63 and a gallon of premium gas was $3.76. Diesel was also cheaper at $3.98 a gallon.

WTOP helps you find find cheap gas. Search for it by Zip Code.

Tell others where you got the best prices. Tweet using #WTOP.

Follow WTOP on Twitter.

(Copyright 2012 by WTOP. All Rights Reserved.)