safe to use lower octane levels?

[smagerstein]

Hi,


We have a gas station chain called OMV (in Slovenia), cheap gas is 95 octain and 100 octain is premium. It cost 2 cents more (1.2% more than regular gas) so this is all I use now.

Since Ive been using only this the car feels a bit..peppier....?? but not so noticable.

Fuel milage seems the same. I get about 450 k (280-290 miles) per fill, which is poor I think. But who cares, its a porsche.

Steven.

[Perfectlap]

^ Smagerstein how much (in dollars) does it cost to fill up your tank?
I think I'm moving with my Boxster to Venezuela, cheap gas and beautiful women..win win.



My car is a virgin to 87 and 91 octane.

I once put a few gallons of some weird brand that was rated 92?? One of those weird Russian brands I think.

93 is 4.22 now....That's gotta be the fastest 30 cent jump I've ever seen.

I'm sticking to 93 and just driving slower. Much slower.
Put the top down, turn up the music and keep the RPMs low.
Welcome to the golden age of the oil industry.

[CP711]

Less than 93 dont be silly! Watch out for the ethonal gas to! Here in Nashville, Tn the news said that there is alot of cars coming in with water in the tank. The dealer said ethonal was ok to use. BUY 93 and hope the ethonal was made correctly or you will have water in your tank. ( In TN all gas has 10% ethonal mixed in) The Exxon by the Titans stadium is the only one left that sales 100 % gas for you local guys :-)

[racer_d]

Hard to believe only 1 station in town doesn't have an ethanol mix. Maybe they just don't have their stickers on the pumps yet. Especially if all the other Exxons in town DO have the sticker. I don't think 1 station in town gets a "special blend" to sell.

Can you use 87. yes. But why. May as well get some Sears Roadhandlers and cheap ass brake pads too. Might as well not use a full synthetic oil like Mobil 1 too. Hopefully you note the heavy sarcasm. Do what's right. Treat the car like it should be or sell it. No point ruining another Porsche

[Kirk]

Yes, if you put in 87 octane the engine might knock or ping in which case the DME will then pull timing. Only performance will suffer. HOWEVER, is not the performance of the car related to your fuel economy? I think what some others have tried to say is that even if you run the cheap gas the car may not run as well with the pulled timing and in the end your fuel economy may suffer. It may actually end up costing you MORE to run the lower octane because of this.