I figured get everyone'* info. on the L36 N/A gas mileage also....

I get on average 23... which comes from an average of 400 miles/tank.

Just wondering if this is low or high, and also can be compared to the L67 topic, which i am curious about gas mileage between such similar engines.

2001 SSEi, L67, I get about that with in town and highway cumulative. I have my foor in it quite a bit too. Just on Highway going up to Mich I was knocking down 26 but I need a tune up bad. Id say you are on the mark.

I have been doing 140 miles a day for work, doing about 420 miles per tank. 2 tanks ago, I got an average of 29 mpg, 85% highway driving @ 73 mph.

The last tank was 440 miles, averaged 28.5, 80% highway @ 73 mph.

I know this car can do better.

Mine is also the larger gear ratio... this may be why my MPGs are lower than others... my RPM'* have to be higher in the final drive.

How do you know which gear ratio you have? I thought the g-body'* were like 2.93'* or something like that.

RPO codes...they are located under the trunk carpet

Yeah, I don't know why I didn't even think of this.

I believe once you write (what looks to be a few, but ends up being like 50 of them) down, then i think you can look them up in the tech info.... here http://www.bonnevilleclub.com/forum/...e=article&k=13

That should help ya out

I was looking for that a while back, must have looked in the wrong section. Thanks!

The RPO code for the 3.05 final drive is F83. Otherwise you have 2.84 gears.