I have always used Chevron's premium gas in my 3 previous cars. So, it goes without question that I do the same for my G. Have you folks noticed any difference between different gas stations' premium brands of gas with regard to your G's performance, drivability, etc.?

I would assume any difference is marginal at best and that premium gasolines are essentially that same, bar proprietary additives.

Just a thought.

 

There is a thread that was recently started on this here:

https://g35driver.com/forums/g35-coupe-v35-2003-07/59574-what-gas-company-do-u-guys-use.html

 

Yes, thanks for the info. That particular thread is why I posted this thread. I noticed that depending on your location, there appears to be a difference in octane levels . . . And as such, I would assume that the additives may or may not be a bit different depending on your location, due to supply availabilty and such. So, I figured to narrow the question to NorCal. Actually, I mean the local Bay Area to be more specific.

 

I've been using ARCO gas since I learn how to drive! once awhile I will use some other brands, cus can get lil discount for car washs , havent found or notice any difference.

 

I seem to get better gas mileage on chevron, so I tend to use chevron 91 octane

 

+1 Chevron Super

 

about the location, i've been going to the same 76 gas station for the past 7 years (if i'm local, also different cars) and I havent had any problems wth them. usually if i use another brand of gas, ie chevron 91, i lose gas mileage.

 

Normally use the SHELL or Cheveron (91 octane). Nerver seen any difference in previous cars or my bike. The bike tends to be a "bit " more pickey about the gas I use, SO if there was a difference I imagine I would see it in my lil' girl (bike) first before I notice anything in the G.

BTW, bike is a 96'ZX7R..... Hence the name zx7biker. (I'm not one for originality)

 

Please note that my ECU has been reflashed to increasing ignition timing

At the August 2004 NorCal dyno day, my car was detonating/pinging/knocking like crazy with the Chevron 91 octane gasoline. We added six gallons of 100 octane gas to boost the octane level and put the car on the dyno again and the problem disappeared. Casey, the Modacar tech recommended using 76's premium unleaded. I returned the following week, and Casey noted that the 76 gas was performing much better than the Chevron gasoline on a road test (Did not test on the dyno).

Not being satisfied, I went south and joined the SoCal G35ers for their dynoday a week or two after that. No pinging with 76 gasoline on that dyno, which was a dynapack, which is able to simulate load.

The reason I bring up the road testing and Dynapack load-simulation capability is that Technosquare thought maybe the DynoJet at Modacar was not giving the car enough load, and the ECU didn't scale back the timing as it does in real-world situations when load is increased. The ECU chooses maximum timing at high-rpm with low load, which is a situation that the DynoJet might have created.

Take from it what you will, but I had pinging with Chevron and no pinging with 76. Maybe just a bad batch of Chevron? No real way to find out, but 76 is working well for me.

 

Thanks for the helpful tip. Will make a note to get a 76 gas card and not use the Cheveon on the G.

Thanks for the reply

 

That will work. I'll give 76 a try. Thanks!

 

I've used 76 since day 1 because they use ethanol over MTBE.. the DSM guys who race uses 76 over anything else in socal therefore I went with their recommendation.. only time I'd use anything else is if I had no choice

 

iono how true this is but I went to fill up at the chevron station off of 101 and millbrae and the premium gas said 92...not 91. Mebbe it's a joke or something but i thought...DAYAM!!! 92!!!!!!!