Welcome • User Guide
ToS • Privacy • Canary
Donate • Bugs • License

©2026 Poal.co

481

I have a 5 gallon can of gas from 8 months ago. I did far less yard work than I intended. I have fuel additives I could use. Joogle says 3-6 months, but I am looking for "real world" answers.

Please only answer if you know what you are talking about, and remember, I already used the internet to try to find my own answers.

Edited: Fuel is 89 Octane with UP TO 10% ethanol added.

I have a 5 gallon can of gas from 8 months ago. I did far less yard work than I intended. I have fuel additives I could use. Joogle says 3-6 months, but I am looking for "real world" answers. Please only answer if you know what you are talking about, and remember, I already used the internet to try to find my own answers. Edited: Fuel is 89 Octane with UP TO 10% ethanol added.

(post is archived)

You are currently inside a comment thread.
Click here to see all the comments (30).
[–] • 5 pts

If sealed , quite a long time, first remember this you have no idea how long it’s been stored before it made it to your pump ....... I used to build high end race engines we sent race gas off to a lab for octane testing one time to test this same subject....... gas one year old or more properly stored and fresh from pump had same properties and octane Levels ... evaporation and oxygen is what ruins it leaving gunk behind ..... the closer to full and more airtight the container the longer the shelf life ..