Put in my ThermoBlok and changed my plugs........just got 31.3 mpg highway
Cruise control set at 75 and few delays but a smooth flow.
Even found Exxon Super for 3.04 off of 95 in Stafford County in Virginia


( Yea right.... celebrating three dollar gas )

 

what plugs did you use?

i think mine are going bad.

 

NGK Iridium zfr6fix-11

 

last tank 343mi. ,10.4 gal to fill (32.88mpg ) 75-80% xway miles, balance 1-2mile city trips . this is typical since new.
original plugs. 65k miles

 

Look like I need to find more hills to coast down.

 

how many miles do you have on ur cls?

 

Just flipped 52000. It's a 03 I got last September.
I usually average between 28 and 30 highway, any little bit helps.