olliestevens999

Which do you use. Regular 95RON or the super unleaded (or alternative) 98RON.

Is it worth getting the more expensive one?

Ollie

RXSeven1

yes. you will notice a huge impact on gas millage.

olliestevens999

There will be a difference in mpg? What about performance/acceleration etc...

nycgps

iTrader: (1)

I believe all gasoline today are unleaded -_-

Its more like "Regular or Super/Ultimate"

Do a search, it has been covered like Zillion times.

mysql101

lower octane will give you better mileage because some timing is going to be pulled.

StealthTL

iTrader: (1)

No difference, rotaries (without turbos) can run really low octane grades - we have 87 available here, works just fine, 4 years and counting.

I've done experiments up to 114 octane rated fuel (work in a refinery) with no gain.....

Just for my own info, what is the price spread between a litre of cheapo and a litre of the hi? Here we pay about 8 cents, (Canadian$) so about 4 or 5p....

S

4me2

10% ethanol sux...........
Reg is fine if you don't knock.
Search premix while you are at it.

CarAndDriver

I prefer unleaded over leaded.

olliestevens999

Super is usually about 5p more! Regular is £0.979 and super £1.029 at the moment..

ken-x8

Ollie, check your owner's manual for the recommended octane rating, and when you read numbers here make sure you convert between RON values and the (R+N)/2 values that most of us quote.

My US owner's manual says 96 RON or better, but 91-95 RON is ok with "slightly reduced performance." (R+M)/2 values are 91 recommended, 87-90 OK at "slightly..."

Lots of posts here from people who use the low end and say their cars perform as well or better on it. Also lots of posts from people who say thier cars run like crap on anything less than 91. So see what you and your car like. You won't get any benefit from octane above the recommended value. (Others may disagree with that - too bad.) You might not have any problems at lower values.

I use 93 in mine, because where I live they sell 87, 89 and 93. I believe in following manufacturers recommendations (which would be 91), but I'm just not compulsive enough to fill 50/50 with 89 and 93.

Ken

Rems31

unleaded super

tommy04rx8

run 87 with out a proble and getting 290 miles per tank to the 250 per tank i was geting with 93

onephatguy

My driving habits must be terrible. I'm getting about 200 miles to the tank on 91 octane.

Nopstnz

i prefer shell 89. I get wayyy better performance than regular v power but also get a bit worse mileage

StewC625

you will notice no difference in mileage or performance between regular and premium fuel as long as the fuel is pure gasoline and not ethanol blend. Add ethanol and the gods of rotarydom will stick their straws of hell into your gas tank and start sucking for all their might.

Which ain't fun when that's all you can buy in your area.

StewC625

whoo hoo! 1900 posts!

swoope

iTrader: (5)

good job.

thanks for taking the heat off!!!

beers

HCTR154

87 octane, usually Chevron, works fine for me here in Texas.