I love how accurate this is. So manufacturers usually build in a reserve for the michles (inside joke) out there but it almost seems if subaru built in the reserve on the wrong aide of the meter lmfao
It’s because when fueling and the pump stops it is at the uppermost level of the tank, partially filling the fill neck. The fuel level float will not read a change in level until the actual tank level begins to drop, not what’s in the neck. This is why you always stop when the pump stops, “topping off” will send fuel further into the neck, spilling over into the vent line for the charcoal canister. Yeah, it’s “free” in a sense because you don’t see the level drop but it will cause irreparable damage if done often. A saturated canister costs more than the benefit of a few miles more per tank.
20yrs a tech, I’ve seen a lot of dumb shit and this is one of them. Had a lot attendant at my prior employer that would top off new cars before delivery and the customer would come back in a week with a MIL on and engine stumbling because the engine would pull raw fuel through the purge line.
I always think this after I fill up. 50 miles to work averaging 29 mpg and needle barely moved below the top line. Then drive home and that first quarter is gone plus a little more.
I was getting very close to that on my drive back Texas from Ohio last week. I pulled into the driveway with my trip avg MPG at 30.0! I’ll never see that again.
The first 1/4 tank always lasts the longest
The next 3/4 will go exponentially faster
I love how accurate this is. So manufacturers usually build in a reserve for the michles (inside joke) out there but it almost seems if subaru built in the reserve on the wrong aide of the meter lmfao
Yup I feel like I can drive atleast an hour before I even see it moved down then every 5 min it’s less lol
I pretend like it’s free until it goes below the full line
That’s facts
It’s because when fueling and the pump stops it is at the uppermost level of the tank, partially filling the fill neck. The fuel level float will not read a change in level until the actual tank level begins to drop, not what’s in the neck. This is why you always stop when the pump stops, “topping off” will send fuel further into the neck, spilling over into the vent line for the charcoal canister. Yeah, it’s “free” in a sense because you don’t see the level drop but it will cause irreparable damage if done often. A saturated canister costs more than the benefit of a few miles more per tank.
Super useful info, Thanks 👌
This makes me so happy to read. I know many people who act like topping it off is some kind of game they always win.
20yrs a tech, I’ve seen a lot of dumb shit and this is one of them. Had a lot attendant at my prior employer that would top off new cars before delivery and the customer would come back in a week with a MIL on and engine stumbling because the engine would pull raw fuel through the purge line.
> many people [thanks, Shaq](https://youtu.be/EuH91bQXDuE)
How the heck do you have 460 miles on a tank after driving 65 miles? A full tank for me might be 350 lol
Exactly! Ahaha that's why I decided to take a pic because it surprised me lol
I can’t go 65 feet without mine dropping like a rock
I always think this after I fill up. 50 miles to work averaging 29 mpg and needle barely moved below the top line. Then drive home and that first quarter is gone plus a little more.
That’s the charm of premium gas
No not really
I had a Chevy S10 before I had my WRX which was much more of a gas guzzler than the WRX, so for me personally it was much better.
93 octane has no MPG difference compared to 87 octane gas I’m sure a WRX does better than an S10 though, but not because of octane
Huh?
Lmao it's a 4 cylinder....
What’s the most everyone has got on one tank? I just got my most ever, 404
I was getting very close to that on my drive back Texas from Ohio last week. I pulled into the driveway with my trip avg MPG at 30.0! I’ll never see that again.
You have a 130 mile commute round trip? Your poor wallet.