Loki

iTrader: (1)

AAA Study Finds Drastic Differences In Gasoline Quality

So basically, spend the extra 2 bucks for high quality gas. Your engine will thank you. I'm not sure which fuels are stamped "Top Tier" but it seems important to figure out!

Gravey

iTrader: (3)

In Canada I'm pretty sure Shell, Esso, And Petro Canada are considered top tier.

I do Petro Canada 94. always.

Love_Hounds

Recently a gas station near my parents place in northeastern CT, got a batch of gasoline that was so bad it clogged the filters/fuel pumps in some cars that got gas there afterwards.

The station had to pay to fix the fuel systems for those vehicles.

IamFodi

iTrader: (1)

Shell is my main source, because it has a rep for being the cleanest.

Next is Exxon/Mobil, because they're also Top Tier and I had some advice in their favor from someone whose opinion I respect.

On rare occasions, when I can't wait and there's nothing else around, I use Sunoco.

Can't remember the last time I got any fuel from any other station.

Loki

iTrader: (1)

Apparently Sunoco is not certified:

Retailers

IamFodi

iTrader: (1)

Well I did say it's my last resort. It's like 5% of the fuel I buy.

This reminds me, though: I've had a few rotary folks give me crap for insisting on Top Tier. They said high-detergent fuel washes oil off the rotor chamber walls and increases wear. Maybe my Google-fu is weak, but I couldn't find any mention of that anywhere else. Anyone heard something similar?

gwilliams6

Yes IamFodi it is a Catch-22. High detergent gas can wash the oil away that is lubricating your engine while helping with less carbon deposits. The AAA tests were NOT with a rotary engine, with its unique internal lubrication needs. It probably is still a good idea to use the best quality gas you can. Back in my amateur RX7 racing days we used top tier gas (lots of Shell , Exxon and Sunoco's Cam 2) , but also used the max premix ratio to protect our engine's internals for the sustained high rpms we were running.

IamFodi

iTrader: (1)

Can you point me to a source where I can read more about the wear thing? Literally everything else I have read about fuel in an internal combustion engine is consistent with the idea that quality and deposit control are the two most important things (in that order), period. And I have to imagine that would be especially important for a dirty engine like the Renesis...

gwilliams6

IamFodi , I will find it and post to this thread. Cheers my friend !

gwilliams6

TOP TIER™ Licensed Retail Brands, as of July 12, 2016 (This is North America's list)
76
Aloha Petroleum
Amoco
ARCO
Beacon
BP
Break Time
Cenex
Chevron
CITGO
Conoco
Co-op
Costco
CountryMark
CountryMark Plus
Diamond Shamrock
Entec
Esso
Express
Exxon
Holiday
Kwik Star Stores
Kwik Trip
Mahalo
MFA
Mobil
Ohana Fuels
Petro-Canada
Phillips 66
PUMA
QT
Quik Trip
Road Ranger
Shamrock
Shell
Shell (Puerto Rico)
Shell V-Power
Shell V-Power NiTRO+
Sinclair
Standard
SuperAmerica
SuperFuels
Tempo
Texaco
Tri-Par
Valero