Interesting fuel octain discrepancy I found.

mo8414

Supercharged
Joined
Jul 26, 2025
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278
Ride
2025 Triumph Rocket 3 Storm GT
So I looked up my manual on triumphs webpage using my vin number and it shows to use 89 octain or hogher. I looked in the physical book the bike came with and it says 87 octain or higher.

Also noticed the online version seems to have more pages than the book I have although I don't know what they added to the online version. I'm assuming the online book would be the most up to date. Very interesting to say the least since my bike is a 2025.

20260315_084104.jpg
 
I use all levels on my 2024 and never had a problem. I have noticed that the projected mileage range does show higher with higher octane fuel when I fill it up but I haven’t tested to see if it translates to actual mileage improvements.
 
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