Not saying these guys aren't correct, but I've been running mine with 87 for over a year and a half with NO problems. I can't get 91 here in Ohio; it's either 87, 89, or 92/93/94 which is about 20 cents higher per gallon. I drive about 15k per year, so at an overall 20 MPG it's about $1.00 cheaper per hundred miles, or $150 cheaper per year. So I've saved roughly $225 in 18 months with the cheap stuff. Now that I think about it, maybe I should just run premium. LOL.

I owned a 1998 GS 300 straight 6 and ran 87 in it for over 5 years and it purred like a kitten the day I sold it, and I have no regrets.

I think modern cars can adjust for cheaper gas, but that's just me.
No knocking and pinging for me either. My 2004 runs just fine on 87 (but I can see the argument the other way too). I'm a cheap person really.

 

WOW !! A million miles without replacing the cats or O2 sensor is amazing!!!
Perhaps you meant 100,000 miles?

 

Im a cheap bastard too but if you can afford a 430 why save 250bux a year on gas ? Thats like 20bux a month if you drive 15k miles a year and pay 4.80 for 91 vs 4.50 for 87. Anyway your right modern cars do adjust for crappy gas...to an extent. You wont hear knocking or pinging usually these days, but the ecu is retarding the timing and dumping more fuel in to compensate.

LOL I saw that too

 

I have run regular in my Benz, Beamers and now my 430 with nary a problem over the last 15 years,, I do not hot foot it so not worried about how much power it can make,,

the cost of the fule is not the issue, I just do not like paying the oil companies and the Saudis the extra $$ to further line their pockets,,

we all run our own bath water,, go for the premium if ya feel the need,,

 

Another thing to consider - I was reading on the MB forums about several cars getting a large amount of water in their tanks from getting 94 at the pumps - apparently the theory is hardly anyone is getting premium fuel due to the price of gas and the premium is getting "stagnant" since hardly anyone is buying it.

Who knows. I will run 87 and not worry about it. If you guys see me at a light you can beat me 0-60 by a few milliseconds with your premium fuel!

 

I will conduct a road test to find out how much better (if at all) I get on 94 Octane gas. This will take a while as I still have a half tank left of the cheap stuff.

Standby!

 

I AM saying these guys are incorrect! The car will do just fine on regular gas. It won't knock and you won't ruin your O2 or your cat and you won't get less MPG. There's no 'trash' in reg grade gas (LMAO at that one) - as a matter of fact now that gas is so expensive the premium gas sits in the underground tanks for far longer than reg grade. You're probably getting stale gas when you buy premium. Your car may be a little slower when you drag race it, though, and that's SO important.

 

What do you other members think about him using the grade between premium and 87? I myself only use premium but, respect those who are frugal and want to save. Any thoughts on him using the grade in between?

L.G.N.M

 

my son works part time at one of the more popular stations and they have seen the sale of premium dropping off to almost nothing,, when it was .10 to .15 cents different most did not give it a thought but now the spread is .40 cents plus and is making a difference along with the $4 a gallon price for regular,, he has heard some of the stations were discussing not selling premium as their sales were now so small and concern about the gas laying for long periods in the tanks,,

would expect when crude reaches the $170 a barrel and we are paying in the $5 to $6 area for regular the spread will even be more and premium may become hard to obtain,,

 

I know that Lexus builds some bullet proof motors and all. But the fact is, so does Toyota. (if u wanted to be frugal at the pump, why weren't you frugal when you bought your ride.) there's a reason that Lex requires the premium....they're built to higher specs.... Like guns for example, the "ak47" very reliable, cheap to make, built with loose specs.(is why you can drag it through mud,sand,etc and it still fires.) then there's the m16 or HKmp5, precision built, close tolerances, needs more maintenance. (if dirty, will jam.) now when said guns are put to an accuracy test, the AK is not even close to the m16 or mp5. when you want precision performance and quality, you must perform precise maintenance.

 

That analogy is pretty bad. Do you work for the service dept at Lexus? I drove Toyotas for years; I didn't get to this point financially by throwing my money away, which is what you could be doing by spending money on Ultra 94. I'll take the cheaper, always "fresh" 87 octane, while you guys blow your motors with stale gas.

 

We should all respect each others choice to use whatever grade of gas we as adults decide to. Can we please stop attacking each other on this site because we disagree and have adult convo's and respect each others choices. If we disagree, lets respectfully disagree! Lets remember nothing we disagree about when it comes to grade of gas is worth arguing about. Think about it,its about grades of gas we use, chill!

L.G.N.M

 

Shi* if we had 94 here I would be stoked

 

Question.........

What is the difference between "fresh" 87 octane & "stale" 91 octane and higher fuel?

We all know that the knock sensors in newer model vehicle control the "pinging" & "knocking" sound we hear from the engine when a low octane gas is used. But what is the damage/dangers, if any, for using "stale" gas?

A few of you have commented on 91 and higher sits in the tanks longer (I guess you all are presuming this "fact") but would there be a problem if the fellas in this thread who decides to "waste" there money on premium, would we have any long term problems?

Just curious!!

 

It takes a lot to make fuel stale. Gasoline is very volitile. I hardly consider any fuel available at a local chevron or shell stale. Think about how long it sits before durning and after the refining process. It takes years before fuel will varnish. The premium pumps around here are empty as often as the regular fuel. The local stations often have yellow empty bags on multiple pump handles at the same time.