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R/T fuel mileage
- Thread starter spyryder
- Start date
You're right.....it probably gets better than that.:dontknow:
Ken5517 / Wish Again
New member
I sure hope so because it takes 91 octane just like my harley.
I sure like the reg, that first spyder uses
I heard a couple of years ago about the MPG for cars & trucks differing from what the company advertised. They said something about the vehicle would get that mileage under "perfect conditions". I've never found "perfect conditions", but I do know when I follow behind Remmos towing our 5th wheel, I get awesome gas mileage! 
wolfshead1
New member
Road the R/T today,my thinking is less milage than previous models.More weight less horses.
Lamonster
SpyderLovers Founder
My truck has the same thing and it's pretty easy to check what it reads and what it is.
By all rights we should be running 91 or better in our Spyder now but they have retarded the timing so we could get away with 87. The fact that it requires 91 now making me think the timing is closer to where it should be and that should give you more power and better fuel mileage.
Ken5517 / Wish Again
New member
I would not mine the 91 if we could get closer to 40 mpg even 38 would make me happy - Harley get 44 -46
:agree:
bone crusher
Alignment Specialist
I heard a couple of years ago about the MPG for cars & trucks differing from what the company advertised. They said something about the vehicle would get that mileage under "perfect conditions". I've never found "perfect conditions", but I do know when I follow behind Remmos towing our 5th wheel, I get awesome gas mileage!
Those standards have been revised so that the mpg better represents real-life situations...I think this took place 2-3 years ago...numbers are more accurate now...
bone crusher
Alignment Specialist
I found no appreciable difference when I ran 91 for a few tanks...for the extra 25 cents a gallon, it's not worth it...then again, what's 25 cents a gallon when you're only putting in 5 at a time...lemme see...oh, $1.25....not a big deal...either way, I haven't found the bike to run any better...
Firefly
Active member
Yup--- they all went DOWN to reflect real-world use---- not sure if bikes had to follow the new rules (or any for that matter) or not???
It's not like a bike has a sticker with the EPA MPG ratings.....
bone crusher
Alignment Specialist
Very true! Didn't think about that...there is just the info that BRP put out about 25-35...I am now getting a little over 30, but I ride hard...I see some here are getting around 38 and I just can't figure out how...that is really good for this bike...
The new RT, with more torque and less HP, along with 91 octane needs, might do better than our bike...but, with all the extra weight, that might be canceled out...we'll have to see...
B
BillGargan
Guest
Trust your manufacturer . . . Engines can be designed to do almost anything today. If the manufacturer says that the machine will run on standard gas (87/85 depending on where you live) then it will and you can be foolish and pay and pay and pay for higher octane.
The only impact in octane is on knocking and pinging. it absolutely will not give you better mileage, clean your engine or make it go over rough roads better. That is not my opinion, it is motor and fuel science. Google the subject. Use the recommended fuel . . .
Also, all brands get their fuels from the same fundamental regional sources. A scant few add things to the fuel at the delivery point -- most just sell it raw. Exxon/Mobil and every other brand are sourced back to the same wholesale locations. All those signs that say our brand is cleaner or will help your engine are unmitigated bull-crappe!!!
In the end it is your $$$ -- but, it makes me sad to see folks spend their $$$ wastefully when they could make better use of those $$$.
The only impact in octane is on knocking and pinging. it absolutely will not give you better mileage, clean your engine or make it go over rough roads better. That is not my opinion, it is motor and fuel science. Google the subject. Use the recommended fuel . . .
Also, all brands get their fuels from the same fundamental regional sources. A scant few add things to the fuel at the delivery point -- most just sell it raw. Exxon/Mobil and every other brand are sourced back to the same wholesale locations. All those signs that say our brand is cleaner or will help your engine are unmitigated bull-crappe!!!
In the end it is your $$$ -- but, it makes me sad to see folks spend their $$$ wastefully when they could make better use of those $$$.
I may be wrong but when you look at the three major differences between the engines, You should get better gas mileage
Compresion ratio is higher
Horse power is lower
Torque is higher.
The higher Octane is required for the higher compression. But when you add that with the above, you should get better MPG's
Compresion ratio is higher
Horse power is lower
Torque is higher.
The higher Octane is required for the higher compression. But when you add that with the above, you should get better MPG's
Firefly
Active member
Correct--- the higher compression of the 'new' engine requires the higher octane. The specs also state they have tuned this 991 engine to reach maximum HP around 1000 RPMs lower than our 990's do.
Lower RPM's usually equates to higher MPG. But the extra 300 lbs is gonna eat that up IMO.
Bill is also correct about the different fuels. Here in Michigan there is a gas pipeline that runs from Chicago to somewhere near Detroit - It ruptured awhile ago near Jackson Michigan and caused a mess--- and gas prices to go up. It feeds all of the storage tanks for all of the various brands.
They really shouldn't be allowed to market higher octane gas as 'premium' in my opinion.
I forgot about the extra 300 pounds. I guess we will have to see how they do after the RT-5 do there respective rides back home..
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