Jump to content
SAU Community

Recommended Posts

Hi people,

I have to admit i didn't use the SEARCH function on this question, a little lazy.

I am wondering if the petrol you pump into your vehicle will stay 'fresh' after 2 weeks inside your car?

I remember i read from somewhere on the forums where people did mention that the 98RON might lose a few 'RONs' or something like that.

Link to comment
https://www.sau.com.au/forums/topic/332629-petrol-quality/
Share on other sites

2 weeks LOL... nothing will happen.. Well nothing to be concerned about... My fuel opften takes 1 month or so to get used... Still drives fine.. I'd only be concerned if your running high end power.. My fuel was sitting there for just over 8 months.. and finally drove the car the other day.. Mind you i am staying off boost until a fresh tank can be run though..

Edited by .:: GimpS-R34 ::.
Link to comment
https://www.sau.com.au/forums/topic/332629-petrol-quality/#findComment-5394835
Share on other sites

fuel doesn't go stale in 2 weeks. it does go stale over time, but not in 2 weeks, or even a month really. that said a car will still run on fuel that is pretty old, just not that well. i've got an old commodore and the fuel in it is a mix of about 6 months old and 2 years old and it still starts and runs. my mother has a 2000 model corolla and she had to have an operation and couldn't drive for about 3 months and her car ran fine after those 3 months (i drove it occasionally during those 3 months, but never put fuel in it)

Link to comment
https://www.sau.com.au/forums/topic/332629-petrol-quality/#findComment-5395053
Share on other sites

the amount that it gets diluted it's not worth thinking about though.

but in case you wanted to think about it.....

fill 1: 50L of fuel put in. for arguments sake we'll say it's a 50L of fuel and was drained prior to filling

fill 2: filled up with 10L left, so there's 40L fresh fuel and 10L 1 week old fuel

fill 3: filled up with 10L left, so now there's 40L fresh, 2L from fill 1 and 8L from fill 2

fill 4: filled up with 10L left, so now there's 40L fresh, 400ml from fill 1, 1.6L from fill 2 and 8L from fill 3

fill 5: same as above but now the 10L consists of 80ml of fill 1, 320ml from fill 2, 1.6L of fill 3 and 8L of fill 4.

so when you look at it like that, 40L is from the current fill, 8L is only 1 fill old and the remaining 2L is 2 fills or older and the stale fuel from fill 1 is going to be negligable (only 400mls of fuel in the tank is from 3 or more fills ago). the amount of fuel that is multiple fills old is always going to be small even if you will up with more than 10L to go.

but theoretically speaking the fuel tank still contains an extremely tiny amount of fuel from the very first time it was filled up.

Link to comment
https://www.sau.com.au/forums/topic/332629-petrol-quality/#findComment-5397712
Share on other sites

I dont think fuel goes of that quickly, it would take a few months atleast. It might depend on weather to? I think in the summer it may go off quicker but still not in a time span you would have to worry about unless you wern't going to drive your car for like 6 months. Even then it should be fine.

I have driven cars straight of the boat from japan and they drive fine and god knows how old the fuel is by time the car reaches Aus.

Link to comment
https://www.sau.com.au/forums/topic/332629-petrol-quality/#findComment-5397769
Share on other sites

Fuel does go stale over time. But months or years, not weeks, something like methanol you'd need to be more careful about but not boring unleaded. Lol. Get cars at work driven in by the "seniors", they keep the tanks filled to the neck and re-filled weekly after their one trip to the shops, fuel comes out yellow and has no smell to it, car runs, but poorly, but this is after 5+ years. And usually it's the water in the fuel causing problems in these cases...

Also, my car was knocking under load (so I stopped loading it) on it's journey home post-purchase (import from a dealer), good tank of 98' and it went away...

Link to comment
https://www.sau.com.au/forums/topic/332629-petrol-quality/#findComment-5398797
Share on other sites

fuel doesn't go stale in 2 weeks. it does go stale over time, but not in 2 weeks, or even a month really. that said a car will still run on fuel that is pretty old, just not that well. i've got an old commodore and the fuel in it is a mix of about 6 months old and 2 years old and it still starts and runs. my mother has a 2000 model corolla and she had to have an operation and couldn't drive for about 3 months and her car ran fine after those 3 months (i drove it occasionally during those 3 months, but never put fuel in it)

Thanks for sharing.

__________________

Watch Piranha 3D Online Free

Edited by nicoledc109
Link to comment
https://www.sau.com.au/forums/topic/332629-petrol-quality/#findComment-5401775
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Latest Posts

    • Well, in 2007 he must have been charging about $1800 an hour. He only looked at the car for 5 minutes. And another 4 to write the report wrong, and another minute to correct it. Mind you, this was for a car that was: Stock engine, fmic (hole in drivers guard), all alloy intake and custom air box, 3 inch turbo back exhaust, lowered, and a set of 17" Advans (255/40/17 rear and 235/45/17 front). It was nothing crazy. The blue slipper wanted the "hole in the guard" engineered. But that was because he got the shits that I wouldn't "relocate the battery from the boot, back to the factory position in the engine bay"... In an R33 GTST...     Also for emissions, E85, and don't go wild on timing. It's amazing how the closer you get ignition timing towards max torque, the last couple of degrees really throw NOx counts right up. And for the huge increase in emissions, it's only a small increase in torque.
    • He'll be looking down and swearing about "the damn apprentice" for trying to convince Duncan to use percussive maintenance... 😛  
    • I swear at my GKTech ones every time I have to take them apart and replace a spherical. But I wouldn't swap them for anything else. They absolutely slay every other option, at least in terms of how they actually work. You sure you don't want to live with bearings? I mean, they don't have "ball bearings". They are rod ends and sphericals throughout. Tough as nuts, even though I have found more than one way to wear them out.
    • From when I was looking at getting the 86 engineered for the turbo, the joint said to put in a few euro 5 or 6 cats, then tune the car on a nice clean E85 tune When I was looking at a turbo for the MX5, it was basically the same thing, a couple of cats and a nice clean tune Although, it will depend on the year of the Jeep IRT emmisions standards required, and what mods are done, especially if it has a newer engine installed that requires a higher Euro
    • Yeah - but it's not actually that easy. There are limits for HC, CO, NOx and particulates. Particulates shouldn't be a concern in any petrol engine unless trying to comply to the very latest Euro standard. But getting a tune right so that all the others stay within limits AT THE SAME TIME is not a trivial exercise. You couldn't possibly get it right by just guessing at the tuner's dyno, unless he had a 4 gas analyser up the pipe, which is not often the case these days. It used to be. Every decent shop that did "tune ups" (as opposed to tuning) would have a 4 gas analsyer. Perhaps there's still quite a few of them around these days. But most "tuners" are only watching O2 and power readings.
×
×
  • Create New...