Hey Guys, I just changed my Oil a week and a half ago and i put in 10W30.
On that Tank of gas i did close to 440KM... which i think is pretty decent.
Now this tank of gas i only did 340km... I know im burning oil, but to lose 100km over 1 tank of gas? is this normal?

 

Lots of variables. Did you just change to synthetic? How many miles on the car? What octane? Check your levels. Change of habits?

 

Nope... 4th Generation, non synthetic oil... 190,000km... like i said burning a decent amount of oil...

 

im getting about 400km for a full tank using synthetic oil and 172k on the motor

maybe you just gave it a little bit more vtec this time
vtec sucks gas like nothing else.....

 

when's the last time you changed your pcv valve

 

I changed my PCV valve about 4 months ago... so its brand new... and i only have the SI/SR... its non V-tech

 

Degraded O2 Sensor... I just replaced mine and the difference was 30 miles more at the 1/2 tank.

 

how much does an 02 sensor go for? can i get one used? and is it easy to install?

 

ok so here's the scoop... im doing 25mpg on the highway and 16 mpg city driving... sound normal to you guys?

 

the highway one is right, city one sucks.

 

how can i fix the city one? as soon as i changed my oil last week, the first tank did 19mpg and my next one i did 16 mpg. what gives? O2 sensor?

 

What are your driving habits? It seriously makes a huge difference whether you shift at 3k or 7k RPM's in the city. What do you shift at... while driving, how many redline runs will you do? Do you drive the car like a grandma or like a 16 year old?

 

i think i drive pretty normally. i mean im not a grandma but im not a 16yr old either.... on a tank of gas ill maybe redline it 5 or 6 times.. not very many... i dont go that crazy

 

What do you normally shift at?

I shift at 3k RPM when delivering, and when I don't deliver I shift at 4k RPM, and I get to about 350 miles until the light comes on.

 

i usually shift around 3,500rpm....
thats probably the norm for me...

 

hey, just on another topic, i wanted to know if you get the same gas mileage with 3/4 tank of oil and if you had a full tank of oil... and does me burning oil cause a problem? and how about the cat? if its clogged?

 

bump

 

Your gettin better mileage than me, im doin 200 miles to the tank (321km)

 

Word... 240m on a full tank for me

I'm takin it I get about 22/mpg city beCAUSE the age AND condition of my car I absolutely try my best to put no more wear&tear on her... all local for my ANJ'lude.

1985 Prelude Si; A20 @ ~180k miles; Standard Transmission; Oct. Rate 87; Shifting @ 3-4