V6 and Premium fuel?

[two_wheel_mayhem]

Originally Posted by MBS

You had me till the last paragraph , Saying fuel additives are worthless is wrong, GM recommends only top-tier gasoline which has more additives than the other stations sell ,

Well I just go by my own personal findings, and as with anything "your results may vary"

I don't use top tier fuel, I use BP which is just as good as Shell but did not make the top tier list. Why is this? Is it about money? Pretty much blows your argument out of the water though. No one said to use crap gas like Speedway or the grocery store when the good stuff is the same price anyway.

When I say additives I mean that cheap crap people add to their tanks that is supposed to clean the fuel injectors which does nothing except possibly raise the octane of the fuel slightly. Now seafoam has been tested effective, but it is expensive and they claim you should dump some in your tank and pour some in your intake while the engine is running. Well yeah, that will clean the crap right off your intake valves and out the tailpipe. Of course I tried it in my Dodge truck with 140,000 miles which I have never cleaned the injectors and noticed no difference in mileage or performance. It was running good before and after...hmmmmm?

Fuel stabilizer is another 'iffy' additive. It's only effective within a certain time frame window like the 1-3 year mark. I never use fuel stabilizer in any of my vehicles including the motorcycles because they only get stored for 4-5 months. Back in the days my motorcycles had carburetors I used to empty all the carbs for storage because fuel goes bad quick sitting out in the open air.

Gasoline stays good for a year if in a sealed container like your modern car or motorcycle fuel tank, or a gas can. This is the way modern vehicles are today, some of the superstitions are left over from the old carburetor days Like i said, my findings, because I've seen the difference in fuel in the vehicle that "broke down sometime last fall" and the one that sat for 5 years.

[rtcat600man]

Originally Posted by two_wheel_mayhem

Well I just go by my own personal findings, and as with anything "your results may vary"

I don't use top tier fuel, I use BP which is just as good as Shell but did not make the top tier list. Why is this? Is it about money? Pretty much blows your argument out of the water though. No one said to use crap gas like Speedway or the grocery store when the good stuff is the same price anyway.

When I say additives I mean that cheap crap people add to their tanks that is supposed to clean the fuel injectors which does nothing except possibly raise the octane of the fuel slightly. Now seafoam has been tested effective, but it is expensive and they claim you should dump some in your tank and pour some in your intake while the engine is running. Well yeah, that will clean the crap right off your intake valves and out the tailpipe. Of course I tried it in my Dodge truck with 140,000 miles which I have never cleaned the injectors and noticed no difference in mileage or performance. It was running good before and after...hmmmmm?

Fuel stabilizer is another 'iffy' additive. It's only effective within a certain time frame window like the 1-3 year mark. I never use fuel stabilizer in any of my vehicles including the motorcycles because they only get stored for 4-5 months. Back in the days my motorcycles had carburetors I used to empty all the carbs for storage because fuel goes bad quick sitting out in the open air.

Gasoline stays good for a year if in a sealed container like your modern car or motorcycle fuel tank, or a gas can. This is the way modern vehicles are today, some of the superstitions are left over from the old carburetor days Like i said, my findings, because I've seen the difference in fuel in the vehicle that "broke down sometime last fall" and the one that sat for 5 years.

I am going after just one comment, don't have time or effort to pick this post appart.

You base that comment in bold on what facts........

I ask because that is my primary fuel stop on my way into work. Getting 93 all the time. I feel my V6 runs pretty damn good for a baby 3.6L.

certainly not looking to start a war, however since you thought Speedway was crap gas, I thought I would call you out and ask.

[two_wheel_mayhem]

Originally Posted by rtcat600man

I am going after just one comment, don't have time or effort to pick this post appart.

You base that comment in bold on what facts........

I ask because that is my primary fuel stop on my way into work. Getting 93 all the time. I feel my V6 runs pretty damn good for a baby 3.6L.

certainly not looking to start a war, however since you thought Speedway was crap gas, I thought I would call you out and ask.

Glad to help.

Speedway/Marathon are the same company but the fuel they sell is different.
No additives package whatsoever in the Speedway gas...max profit.

[KMPrenger]

Originally Posted by 911medic

OK. So, for us LFX'ers:

• slight benefit from higher octane fuel
• two separate timing tables instead of multiple, on-the-fly adjustments
• need a tune to access the higher timing table

That about sum it up?

Can I assume that we aren't so lucky (as the V8 crowd) to be able to do some kind of fuse pull to reset the table to the higher octane one?

BTW, my used catch can & breather just arrived today. Gonna try to get them cleaned up and installed in the next few days.

You are pretty much right. Tunes do great things for the LFX.

[mc_acoustic]

is co-op good gasoline? Or should I avoid it?

[TastyBake]

Originally Posted by SC2150

He is pretty correct on the additives as far as DI engines, but there are advantages to say stabil types for storage.

The reason a DI engine can run a higher CR w/out as much detonation danger is the fuel mixture on a port inj or carbed car is drawn into the combustion chamber on the intake stroke and through the entire compression stroke, so a glowing piece of carbon deposit can easily detonate prematurely. On a DI engine, the fuel is injected directly into the combustion chamber at 2-3000 PSI in the final 20% or so of the compression stroke so it is in the combustion chamber for milleseconds. That is why these will run fine on 87 octaine at that CR, and watch, I expect to see above 12:1 in the future. DI allows more power, better fuel economy out of smaller dispalcement....but that does not take away from the fact that it WILL run better, make more power, etc. on 93. We have seen this dozens and dozens of times on the dyno. We find some buy the VMax CNC patteren ported TB and see poor power....ask and find the owner has 87 in it. Run the 87 out and fill w/93 and see 8-15 rwhp more and far better response.

So no mythbusters needed. It is a personal choice.....they run fine on 87, just not as efficient as on 93.

DI is at 40:1. Correct me if I'm wrong.

Originally Posted by two_wheel_mayhem

Glad to help.

Speedway/Marathon are the same company but the fuel they sell is different.
No additives package whatsoever in the Speedway gas...max profit.

They have additives as its an EPA requirement. They just have the lowest.
http://www.wxyz.com/dpp/news/region/wayne_county/detergent-in-gas-helps-the-engine-run-cleaner-and-smoother-so-just-how-much-is-in-there%3F

Regular Unleaded 87 Octane
(per 100 mL.)
Exxon 20.0mg
BP 17.2mg
Shell 16.2mg
Marathon 8.2mg
Citgo 6.0mg
Pilot 5.8mg
Speedway 5.2mg
Premium Unleaded 92 or 93 Octane
(per 100mL)
Shell 31.0mg
BP 26.4mg
Exxon 21.2mg
Speedway 10.6mg
Mobil 10.6mg
Citgo 9.4mg
Marathon 9.0mg
Pilot 8.8mg

From that article, I'm going to officially stop using GetGo (a.k.a Guttman Oil) and stick to shell.

Stick to top-tier:
http://www.toptiergas.com/retailers.html