Regular 87 Octane and Intro
#16
Originally Posted by ashadiow
My question though, is this, how much difference does 100 octane make? We have a place in town that sells 100oct race fuel. I have thought about buying it... but I don't know.
You might see a slight improvement but without knowing how the ECU is programmed, it's really hard to say. The my350Z forum might be a better place to ask; you're more likely to find someone on there who understands the ECU and/or find more companies who do chip work on this platform.
...Oh and as far as the octane booster, you should just send me $5 in the mail and forget about it. Those products don't really do anything.
#17
Originally Posted by PotomacG
The 5AT sedan you own runs fine on 87 octane. I have parsonally spoken with Pat Goss and other mechanics who all support the fact that premium is not necessary in this car.
lamesag35, why not go by what your owner's manual recommends? There's a reason they recommend what they do.
#18
When I get my G in a couple of days, I will check the owners manual and if it says 87 and recommends 91, I will get premium, if it says 87 with no other recommendation, I will also get premium as it is worth $100 or so a yr for piece of mind. I have always driven higher hp cars and I have never gotten anything other than premium gas. Maybe I am throwing my $ away, but I am not second guessing myself and that is worth something to me.
#19
Originally Posted by skeleton_cru
Well if Pat Goss says so, then it MUST be true.
lamesag35, why not go by what your owner's manual recommends? There's a reason they recommend what they do.
lamesag35, why not go by what your owner's manual recommends? There's a reason they recommend what they do.
Also, my owners manual only recommends 91 octane for increased performance. Minimum acceptible octane for my vehicle is 87.
#22
#24
#25
Originally Posted by kevink
....I've noticed little difference in gas mileage and power on my 2004 sedan between 87 and 91. When the price difference is lower, I will use 91 on occasion, though normally I use 87.
#26
Yeah but has his mileage been different? I would not put anything in less than 89 since they recommend 91. Or does it say requires?
Also if you guys get one of those cash back master cards they will give you like up to 5% cash back for purchases at gas stations. Now there is a no brainer huh. charge your gas and get cash back knocks off about 10 cent a gallon.
Also if you guys get one of those cash back master cards they will give you like up to 5% cash back for purchases at gas stations. Now there is a no brainer huh. charge your gas and get cash back knocks off about 10 cent a gallon.
#27
Originally Posted by lamesag35
My gasoline question is I'd like to know why using 87 is a no-no as I've been doing this with absolutely no problem. The car runs beautifully and any difference with premium 91 (best we got in San Diego) is undetectable. There is no pinging at all that I can ascertain.
Thanks and I'm enjoying reading the forum.
Thanks and I'm enjoying reading the forum.
Originally Posted by lamesag35
The reason I'm being a cheapskate with the 87 is that in San Diego a tank of regular unleaded is already running about $47.00+.
#28
Originally Posted by SAL9000
Cheapskate and driving a premium auto? C'mon now.
As evidence, I suggest a look at the cars at your local Costco. Perfect car appreciation/cheapskate harmony.
Last edited by calejohnson; 04-26-2005 at 03:02 PM.
#29
Originally Posted by SAL9000
That pinging is asynchronous combustion doing its best to knock a hole in the top of your piston(s).....
On an engine as modern as the VQ35, the knock sensors will keep the engine from pinging. This is why the manual for the 5AT sedan states that 87 octane is OK.
Isn't it nice to be able to tell other people how to spend their hard-earned money
#30
Registered User
iTrader: (11)
Huh?
87oct: 14 gallons at 2.10 per gallon = $29.40
Range = 14 gallons at 20mpg = 280 miles
91 oct: 14 gallons at 2.30 per gallon = $32.20
Range = 14 gallons at 23mpg = 322 miles
Range = 14 gallons at 20mpg = 280 miles
91 oct: 14 gallons at 2.30 per gallon = $32.20
Range = 14 gallons at 23mpg = 322 miles
$32.2/322 miles=$0.10/mile
You save 1/2 cent per mile
, but you get the advantage performance benefits.