Your car knocks on 93 octane? How modded is it? Last, 93 octane at Shell is no different than at Costco other than additives which have nothing to do with octane rating.
7
Which brand fuel works best
- Thread starter mawallace
- Start date
Your car knocks on 93 octane? How modded is it? Last, 93 octane at Shell is no different than at Costco other than additives which have nothing to do with octane rating.
Diggs24
Autocross Champion
- Location
- de plains! de plains!
- Car(s)
- 2015 GTI
No idea what you’re talking about. This is an old thread. You asked what KR was.
mac340
Go Kart Champion
- Location
- Seattle Washington
- Car(s)
- 2019 GTI SE 6MT
I always thought Chevron was the best but I read on here Ed from EQT saying they got more knock with Chevron then they do with Shell or 76 so...?
Sorry, that comment was pertinent to what Power Demon posted when he resurrected this thread.
PowerDemon
Autocross Champion
- Location
- Richmond, VA
- Car(s)
- Golf GTI, Camaro ZL1
Yes it does. Not a ton but it’s notable on a log. The car is FBO stage 2. I believe that 93 octane at Shell is different than Costco. I used to think the same thing you did, but the numbers I’m seeing in my data logs are much better on this Costco fuel than on the Shell fuel. If you still don’t believe it, ask any tuner whether or not they think that the brand of fuel makes a difference.
JC_451
Autocross Champion
- Location
- NJ, one of the nice parts.
- Car(s)
- 2017 GTI Sport
Gasoline does age so how fast they sell it really affects quality. I would guess the reason the Costco 93 is better is because it's "fresher."
The Butcher
Autocross Champion
- Location
- United States
I only use Mobil, BP or Shell. After using Thornton's on my last R-Line Jetta, the whole fuel system needed to be replaced before VW exchanged it for the 35th. Not taking chances with the GLI.
I don't have the patience for Costco.
I don't have the patience for Costco.
Handguns4heaRTs
Drag Racing Champion
- Location
- So Cal
- Car(s)
- 2017 GTI SE DSG
If you’re in California, then that is correct. Both Ed from EQT and Jon from 5150 have the same observations and recommendations for fuel- Shell or 76.
93 octane is 93 octane. Octane rating is directly related to knock resistance. A possible explanation is the Costco fuel is actually higher than 93 octane. Is your log showing you’re making more HP with the Costco fuel? This would mean the CPU is allowing more advanced timing.
Redmk7gti16
Ready to race!
BP only for my GTI stage 1 APR
david9962000
Drag Race Newbie
- Location
- Los Angeles, CA
- Car(s)
- MK7 GTI
Chevron Premium,
Handguns4heaRTs
Drag Racing Champion
- Location
- So Cal
- Car(s)
- 2017 GTI SE DSG
WITH Techron? Or without?
jimlloyd40
Autocross Champion
- Location
- Phoenix
- Car(s)
- 2018 SE DSG
Doesn't all Chevron have Techron in it?
Handguns4heaRTs
Drag Racing Champion
- Location
- So Cal
- Car(s)
- 2017 GTI SE DSG
I was being an ass. Chevron is some of the worst gas in CA