this post was submitted on 23 Dec 2023
23 points (96.0% liked)
Asklemmy
43874 readers
1283 users here now
A loosely moderated place to ask open-ended questions
Search asklemmy ๐
If your post meets the following criteria, it's welcome here!
- Open-ended question
- Not offensive: at this point, we do not have the bandwidth to moderate overtly political discussions. Assume best intent and be excellent to each other.
- Not regarding using or support for Lemmy: context, see the list of support communities and tools for finding communities below
- Not ad nauseam inducing: please make sure it is a question that would be new to most members
- An actual topic of discussion
Looking for support?
Looking for a community?
- Lemmyverse: community search
- sub.rehab: maps old subreddits to fediverse options, marks official as such
- !lemmy411@lemmy.ca: a community for finding communities
~Icon~ ~by~ ~@Double_A@discuss.tchncs.de~
founded 5 years ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Higher octane resists detonation (knocking). It's required for engines with high compression ratios. Turbocharged engines are susceptible to detonation, so they'll often require higher octane fuel.
My car has a 4-cylinder turbocharged engine. The manual says I can use standard, mid, or premium. The engine has a "knock sensor" which reduces power (basically by turning the turbo-charger down/off) if it senses detonation. If I use premium gas, the engine will use the turbo as much as possible, increasing gas mileage (according to the manual). The increased cost isn't worth it to me.