Gas OT

[Bob K]

Has anyone tried using 87 OT in there Tracer 900 ?

[Rick123]

Yes. On previously owned 2015 (put 20000km on it) and 2017 FJ09 (road it for almost 40000 km) as well as on 2019 Tracer 900 (first time today in fact). No issues.

[Ride365]

I'd only do it if were my only choice, must assume there are good reasons why we run high octane in this engine.

[knyte]

Higher compression engines means it wants higher octane.  High octane runs better in high compression ratio engines because it's more stable under those conditions.  Running lower octane now and again when nothing else is available won't hurt anything because the knock sensor can usually compensate, but it's ill advised to run it long-term because of the risk of pre-detonation (knock).

So, you get longer life, better fuel economy and power, and less knock with high octane as recommended by the manufacturer.

[Grumpy Goat]

On 3/26/2023 at 6:34 PM, Bob K said:

Has anyone tried using 87 OT in there Tracer 900 ?

Yes I have, on long distances where I do say 500 mile days and am burning through the gas. No bad effects and no noticeable knocking / pinging. Otherwise, I regularly use Extra 89 octane. For me, anything beyond is a waste of money.

[betoney]

On 3/26/2023 at 4:34 PM, Bob K said:

Has anyone tried using 87 OT in there Tracer 900 ?

There have been times while riding in remote areas the only gas available was regular 87, I normally use the recommended premium 91 but when its not available, 87 works just fine.

[Rick123]

And no, no difference in fuel economy.

[OldBikers]

1 hour ago, Rick123 said:

And no, no difference in fuel economy.

Really? 

[Rick123]

17 minutes ago, OldBikers said:

Really? 

Yes, really. Surprised?

[OldBikers]

Yes, really surprised because the anti-knock solution is to retard the ignition timing which will reduce mileage.

[Heavy]

But it will only retard the ignition is there is knock.

[skipperT]

Ok, for the record:

NO knock sensors on the original FJ/MT/FZ/XSR engines!

yamaha recently added knock sensors on the newest Euro 5 engines, so 2022 and forward 9GT and MT09/SP have sensors. 

run lower octane fuel at your own risk. Mileage WILL go down and carbon build-up WILL increase due to a more dirty “burn” in the combustion chamber and valve seat/stem area. Using Yamaha Ringfree plus will help keep the combustion areas cleaner.

YMMV,

-Skip

[kingfisher]

It seems that on every motorcycle forum that I visit, that there is always a thread where some advocate using a lower octane fuel then is recommended for a given bike. If it's your bike, run what you want, but it seems to me that it is questionable to use a fuel that may not be best for the bike in terms of longevity or performance. The money saved with the lower octane is not that great. On a recent 3,000 mile trip, my '22 Tracer used about 70 gallons of gas. If 91 octane is 50 cents more per gallon than 87, that is about $34 more for a 9 day trip. I'll pay that for the benefit provided. YMMV.

[nhchris]

And don’t even think about running a car tire on the rear!! ;)

[2and3cylinders]

7 hours ago, kingfisher said:

It seems that on every motorcycle forum that I visit, that there is always a thread where some advocate using a lower octane fuel then is recommended for a given bike. If it's your bike, run what you want, but it seems to me that it is questionable to use a fuel that may not be best for the bike in terms of longevity or performance. The money saved with the lower octane is not that great. On a recent 3,000 mile trip, my '22 Tracer used about 70 gallons of gas. If 91 octane is 50 cents more per gallon than 87, that is about $34 more for a 9 day trip. I'll pay that for the benefit provided. YMMV.

Here premium is a buck more!

I filled up with mid grade e ten and then For the winter when I tapped it off.

If I'm out for ride and taken it real easy. I may go cheap but usually I do use 91. E10 and E 0. When available

But I do agree with you mostly