Foxtrot
Member
- Joined
- Apr 18, 2018
- Threads
- 2
- Messages
- 16
- Reaction score
- 11
- Location
- South Korea (Colorado or bust!)
- Vehicle(s)
- 2006 TJR (Sold), 2008 JKUR (Sold), 2016 Subi Outback, 2003 Musso 2019 JLUR (ordered)
You are half right. In a normal engine, say the 3.6, which has lower cylinder pressures, going up in octane won't do a thing except lighten your wallet.In your previous posts you make claims that the 91octane fuel will have "more power" and "better mileage". Unless I am mistaken...either fuel will give you the same results. The higher Octane is more expensive...not because it will give you more power or better mileage....but it is more expensive because it has additives to prevent it from detonation.......PERIOD.
If I am mistaken....(there is only 4 octane difference in the two fuels) Please post some test results showing that the premium fuel delivers what you say. Otherwise lets be smart about this and lets all learn. If I am mistaken (wont be the first time) let me be educated. Thanks.
In a turbo or high performance engine where pressures are much higher, either a higher octane fuel or a change in timing is needed. So in a new computer controlled engine, the timing can be adjusted to compensate for knock, but at the sacrifice of performance, no free lunch.
Here is a helpful article and a tl;dr quote from said article.
"Will road cars perform better with high octane fuel?
The simple answer is: yes, if they are designed to."
https://www.carthrottle.com/post/engineering-explained-high-vs-low-octane-petrol/
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