AAA: Top Tier Fuel Study - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

tekFRS234 · 07-10-2016, 07:27 AM

Good info...

https://s3.amazonaws.com/association...rt-FINAL-1.pdf

Th3rdSun · 07-10-2016, 08:52 AM

Quote:

Originally Posted by tekFRS234

Good info...

https://s3.amazonaws.com/association...rt-FINAL-1.pdf

No way I'm reading through all of that. Anyone have the Cliff's Notes version?

Lantana frs · 07-10-2016, 09:30 AM

Quote:

Originally Posted by Th3rdSun

No way I'm reading through all of that. Anyone have the Cliff's Notes version?

Use good gasoline

wireman957 · 07-10-2016, 09:40 AM

The key findings are on pages 2 & 3. That's enough for me right now. I may read the rest of the report later.

Edit: Read the rest of the report. Interesting stuff.

guybo · 07-10-2016, 09:55 AM

This study is incomplete. It needs to tell us what the CPG of each fuel is. Crickets Per Gallon. Crap gas has high CPG, top tier tends to be better.

My wife uses Wawa 87 in her Camaro, and I've been trying to get her out of that habit for a while. It's shit gas and a false economy- it's a GDI engine but that doesn't really mean much to her. I used Wawa 92 gas once and I got crickets.

I'm hoping this study convinces her because we want that engine to last a while.

Dake · 07-10-2016, 10:32 AM

Is there just a simple list of TOP vs non-TOP tier providers?

wireman957 · 07-10-2016, 10:37 AM

Quote:

Originally Posted by Dake

Is there just a simple list of TOP vs non-TOP tier providers?

http://www.toptiergas.com/retailers

strat61caster · 07-10-2016, 10:50 AM

Well I'll be dammed. Looks like legit evidence top tier means something.

I wonder why there's a significant increase in cylinder head deposits with top tier fuel... the benefits on intake valves does seem to be worth the effort, but it's not an across the board improvement.

Lantana frs · 07-10-2016, 10:53 AM

Ive been using racetrac 93 with no problems. Iam is stable, no crickets.

mdm · 07-10-2016, 11:49 AM

Interesting that while using top tier gas resulted in much lower valve deposits tht with non-top tier, the cylinder head deposits were actually a bit larger.

It would be also interesting if they measured injector deposits in a GDI engine.

mdm · 07-10-2016, 11:50 AM

P.S. why this is posted in the FRS section, not in General automotive?

jcw99 · 07-10-2016, 01:03 PM

I see that Sunoco, Tenneco and Gulf are not Top Tier.

stevesnj · 07-10-2016, 01:38 PM

Quote:

Originally Posted by jcw99

I see that Sunoco, Tenneco and Gulf are not Top Tier.

Sunoco works the best for me too.

Lantana frs · 07-10-2016, 02:00 PM

Re combustion chamber deposits: I didn't see afr or cr of test engine in pdf.

07-10-2016, 07:27 AM	#1
tekFRS234 Member Join Date: Feb 2015 Drives: 2015 FR-S Firestorm MT Location: Columbia, SC Posts: 50 Thanks: 6 Thanked 46 Times in 21 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	AAA: Top Tier Fuel Study Good info... https://s3.amazonaws.com/association...rt-FINAL-1.pdf

07-10-2016, 09:40 AM	#4
wireman957 Senior Member Join Date: Jul 2015 Drives: 2015 FR-S MT Steel Location: D/FW area Texas Posts: 466 Thanks: 1,387 Thanked 546 Times in 279 Posts Mentioned: 2 Post(s) Tagged: 2 Thread(s)	The key findings are on pages 2 & 3. That's enough for me right now. I may read the rest of the report later. Edit: Read the rest of the report. Interesting stuff. __________________ "No matter where you go, there you are" - Buckaroo Banzai Last edited by wireman957; 07-10-2016 at 01:46 PM.

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07-10-2016, 09:55 AM	#5
guybo Huge E85 fan! Join Date: May 2016 Drives: 2016 Scion FRS Location: Tampa, FL, USA Posts: 1,850 Thanks: 539 Thanked 1,010 Times in 605 Posts Mentioned: 32 Post(s) Tagged: 0 Thread(s)	This study is incomplete. It needs to tell us what the CPG of each fuel is. Crickets Per Gallon. Crap gas has high CPG, top tier tends to be better. My wife uses Wawa 87 in her Camaro, and I've been trying to get her out of that habit for a while. It's shit gas and a false economy- it's a GDI engine but that doesn't really mean much to her. I used Wawa 92 gas once and I got crickets. I'm hoping this study convinces her because we want that engine to last a while.

07-10-2016, 10:32 AM	#6
Dake Senior Member Join Date: Aug 2012 Drives: FR-S Location: Houston Posts: 1,056 Thanks: 464 Thanked 819 Times in 414 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	Is there just a simple list of TOP vs non-TOP tier providers?

07-10-2016, 10:53 AM	#9
Lantana frs Senior Member Join Date: Jun 2016 Drives: 13 frs red Location: Lantana fl Posts: 448 Thanks: 51 Thanked 198 Times in 115 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Ive been using racetrac 93 with no problems. Iam is stable, no crickets.

07-10-2016, 11:49 AM	#10
mdm not a twin owner Join Date: Jan 2016 Drives: 2016 Veloster Turbo DCT Location: Northern Virginia, USA Posts: 734 Thanks: 992 Thanked 463 Times in 267 Posts Mentioned: 7 Post(s) Tagged: 2 Thread(s)	Interesting that while using top tier gas resulted in much lower valve deposits tht with non-top tier, the cylinder head deposits were actually a bit larger. It would be also interesting if they measured injector deposits in a GDI engine.

07-10-2016, 11:50 AM	#11
mdm not a twin owner Join Date: Jan 2016 Drives: 2016 Veloster Turbo DCT Location: Northern Virginia, USA Posts: 734 Thanks: 992 Thanked 463 Times in 267 Posts Mentioned: 7 Post(s) Tagged: 2 Thread(s)	P.S. why this is posted in the FRS section, not in General automotive?

07-10-2016, 01:03 PM	#12
jcw99 Senior Member Join Date: Jun 2014 Drives: swp mt '14 brz premium Location: 20872 Posts: 166 Thanks: 2,195 Thanked 111 Times in 75 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	I see that Sunoco, Tenneco and Gulf are not Top Tier.

07-10-2016, 02:00 PM	#14
Lantana frs Senior Member Join Date: Jun 2016 Drives: 13 frs red Location: Lantana fl Posts: 448 Thanks: 51 Thanked 198 Times in 115 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Re combustion chamber deposits: I didn't see afr or cr of test engine in pdf.

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