In my 99 DII I get 14.5 consistently around town and just over 15 on the highway at 65-70 but I have a safari rack and 2" of lift which makes me as aerodynamic as a brick. I have a new air filter, MAF meter, gas cap, etc. but original Oxygen Sensors. I wonder if they would help mileage?

 

I change my Front 02s because the service engine light came on and that was the cause. I really don't know how much differance changing a working sensor with a brand new sensor will make. A bad sensor will hurt mpg and they don't last forever.

Willie

 

Hi Willie,

When I did the seafoam, put one canin the tank and pulled another can through the vacuume line on the manifold.
I would guess it should help your cause.
Post back when done, curious what impact it has on your mpg.
Good luck!

Regards,

Nick

 

Which line on the manifold would that be. I'd be willing to see foam it since I've heard good things about it and will be doing an oil change sometime soon.

 

Most use the PCV line but any vacum linethat goes directly into the intake plenum will work.

 

The line going from the PCV valve on the passenger valve cover to the front passenger side of the intake manifold. Just pop it off and let her rip.

Cheers,

Pete

 

I heard about smoking when doing this. How bad and how long does it smoke???

 

Depends. After you do it drive it hard for a few miles.

 

Its like summoning Batman to employ the smoke screen!

Actually I was dissapointed, only smoked like a mother for a few minutes when I did it.
Was expecting more I guess...

 

Damn, only 17.4 mpg!!! I would definitely sell it [sm=chairshot.gif] Just kidding....On a side note, I think my 96 disco gets better mpg than my 95 BMW 740il!