devasta

it's a 99 2.3 cl auto with 64k on it and it's doing around 240 miles from a full tank.. mix of both hwy and local......mostly local. I used 91 unleaded and hardly step on it..just normal driving. Is this typical for this car?

LCARUCA 97

use 87 and it will get considerably better

devasta

won't lower grade gas f'k up the engine in the long run??

Andrewmc621

acura says to use 87, not 91

mfkitson

87 works fine, to figure gas mileage, fill the tank, drive with trip odometer started at 0, fill up again and divide miles driven by gallons used...

agranado

holy shit that SUCKS. ive got a 97 2.2 (granted its manual) but I drive that thing hardcore all the time and I still pull 300~ a tank. Of course, I drain it till it gets to about 2/3 g left in the tank

-Alex

wjk

If the car's designed for 87, then use 87. Also, try this: Fill up, and when the pump stops, stop, don't try to add more gas... Set your trip-meter to 0. Drive till you're down to 1/4 tank. Fill up again, let the pump click off by itself. Divide the miles on the trip-meter by the gallons you just put in. That's getting you in the ballpark of the actual MPG you're getting. You can keep doing this with every fill-up and you'll see what your real average is.

Obviously all stop and go, or all highway driving will impact your mileage pretty significantly up or down. Overall though, you'll start to get a pretty good idea of what's normal for your car.

mfkitson

Wish I'd have thought of that!

devasta

by all means I would love t use the 87....but I don't think it's going to increase the gas mileage

wjk

My apologies. I didn't see your post till just now.

wjk

I don't think it will, but you only need to use 87 if that's what the manual says.

It's funny, I was just talking to a mechanic friend of mine today who says using premium when you don't have to can actually cause some issues. (Damn I forget which particular things he mentioned).

Anyways, there are lots of articles out there from knowledgeable people who say that running a higher octane than required does no good (except help someone else make money).

If your car is running smoothly, feels good, then unless you're slamming on the gas at every stop light, then your mileage is going to turn out better than you think it is.

Palayah8ta

i know this is dumb, but when i drive on the highway (ie. drive to san francisco) i use 89 octane, but normally i use 87. Ive gone up to san fran couple times, and when i used 89 ive gone about 50 miles furthar b4 filling up. I go 425 miles with about a gallon left. But city driving i get 300.

Also when its cold outside 87 works best for my car. I sure its all in my head... But i swear its true!

bird10

I may be confused, but you're getting 300 miles out of 1/3 tank?

Hobo

i think he means .667 gallons left in the tank...


anyways, all this stupid "miles per tank" bullshit needs to stop.

post miles per gallon or dont post.

98CLChick

They need to quit making these threads. There's a million of them already.

wilp99

i gets bout 340 miles per tank with my 3.0, w/ moderate driving. city and highway. but mostly city. but it didnt get this good until after i put on my headers. i only got maybee 300 miles per tank. so its actually not that good maybee 25 mpg. but that is mostly city driving, so...

agranado

I wish. what I meant to say was that I was getting around 300 with only 2 or three gallons left in the tank, then i'd have to refuel again.

and 1,000 post woo hoo

-Alex

agranado

which means i get around 20/21 miles to the gallon, on average.

-Alex

mfkitson

No prob, just pickin on ya!

ominous

My 97 CL3.0 didn't come with a manual. The bastard lost it, and I didn't find it where I found his misplaced cheetos when I bought the car...

What octane should I be using for a CL3.0? I use 89 currently because it's a v6, has moderate compression and I push it a bit.

I read a while ago that the difference in octane is simply the resistence to combust under pressure. There is no `quality` difference, it is simply combustion resistence. Makes sense, this is why you use higher octane in larger engines. More compression, more fuel in general, more power. If this is true then it makes sense to use 89 in a fast v6.

But I'd like to know what my owners manual says :P

Nick 97cl

Ok, this is the grandaddy of all n00b posts, but Headers actually improve your mileage? If so I'll have to get some....I drive from NY to FL frequently and the more mileage the better. Right now I get about <300 city/highway and 340+ just highway.