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Domman56 · 01-16-2010, 02:09 AM

I'm planning on doing an upper grille block on my el camino to see if it improves mileage at all

Should I try it on the inside or the outside?
Here's a pic

and what should i use? it HAS to be black

01-16-2010, 02:09 AM	#1 (permalink)
Domman56 Master EcoModder Join Date: Dec 2009 Location: Lancaster Ca Posts: 362 Tank - '76 Chevy El Camino Classic 90 day: 25.89 mpg (US) Sabrina - '91 Mercedes Benz 190 E 90 day: 37.07 mpg (US) Angel - '88 Mercedes-Benz 420SEL Last 3: 23.01 mpg (US) Quicksilver - '04 Mercedes-Benz CLK55 AMG Cabrio Thanks: 52 Thanked 8 Times in 8 Posts	Plans for grille block on Tank I'm planning on doing an upper grille block on my el camino to see if it improves mileage at all Should I try it on the inside or the outside? Here's a pic and what should i use? it HAS to be black __________________ Tank: (No actual EPA numbers for car just used F/E numbers when i first got it)