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Discussion Starter #1
With the Direct Injection engines, does anyone have or know of recomendations of the frequency need for fuel treatment?
 

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I'd just make sure you stick to "Tier 1" gasoline. It usually has enough detergent in it so you don't need additional treatments.
 

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Agree with the post above, Just use gas from a Chevron, 76, Shell, Texaco and you should be fine.
 

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Discussion Starter #4
In the MSP/St.Paul area there aren't too many Tier 1 stations. We have mostly Holidays, Superamericas, Sinclair's, etc. We do have a few Shell's and some Kwik Trips. I'll go to those.
 

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Narg said:
I'd just make sure you stick to "Tier 1" gasoline. It usually has enough detergent in it so you don't need additional treatments.
Boltbacker said:
Agree with the post above, Just use gas from a Chevron, 76, Shell, Texaco and you should be fine.
I think both of you should check out some VW DI engines. Even using tier 1 fuel they still suffer from carbon buildup especially on the valves.

I, personally, will be using a can of seafoam in the tank every 3k miles. Might be a tad overkill but we will have this vehicle for 7-10 years so need to have it in tip top shape for its life. Just cheap insurance.
 

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bballr4567 said:
I think both of you should check out some VW DI engines. Even using tier 1 fuel they still suffer from carbon buildup especially on the valves.

I, personally, will be using a can of seafoam in the tank every 3k miles. Might be a tad overkill but we will have this vehicle for 7-10 years so need to have it in tip top shape for its life. Just cheap insurance.
Toyota engines have oil sludge problems too. Every maker has some issue of some type. Fuel is one I've never see in a GM engine. My sister traded in an 18 year old Suburban for her new 'Nox a couple weeks ago. Quarter of a million miles, and only engine problem it ever had was an alternator at around 150K miles. Never put anything special in it either. Normal gas, normal oil.
 

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Narg said:
Toyota engines have oil sludge problems too. Every maker has some issue of some type. Fuel is one I've never see in a GM engine. My sister traded in an 18 year old Suburban for her new 'Nox a couple weeks ago. Quarter of a million miles, and only engine problem it ever had was an alternator at around 150K miles. Never put anything special in it either. Normal gas, normal oil.
I wasnt talking about old FI engines. DI engines produce more carbon and therefor more deposits.

http://www.planet-9.com/cayman-boxster-chat/32256-maybe-dfi-not-good-buy.html

http://forums.audiworld.com/showthread.php?t=2746852&highlight=carbon+build Pictures are not hosted anymore on that one though. :(

http://forums.vwvortex.com/zerothread?id=4773361

http://www.golfmkv.com/forums/archive/index.php/t-114143.html


Itll be interesting to see how GM DI engines react when they get around 20-30k miles.
 

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Itll be interesting to see how GM DI engines react when they get around 20-30k miles.
[/quote]

DI engines have been used since the June 06 release of the 2007 acadia, my 08 has 40K on it and I have never added anything to the fuel system, other then 10% ethanol, runs like the day I took it of the lot.
 

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10equinox said:
Itll be interesting to see how GM DI engines react when they get around 20-30k miles.


DI engines have been used since the June 06 release of the 2007 acadia, my 08 has 40K on it and I have never added anything to the fuel system, other then 10% ethanol, runs like the day I took it of the lot.
I bet your valves have build-up as well.....There is not much we can do..its a side effect of DI engines, its not a certain manufacture that has this issue....its more all Direct Injection engines will have this issue, being they do not have fuel moving across the intake valves to clean them. Dirt into the engine, but no cleaning effects from fuel. Running fuel cleaner is great (for the injector because they carbonize as well or this is where high quality gas comes into play)...But being nothing but carbon is settling on the intake values they are going to have build up.

Ever notice how your exhaust tips collect carbon so easily? Imagine the intake valves now....

VW has had DI since 2002 in the US....Just give it time you will see more and more others that show this issue. I will agree its worse on the turbocharged models
 

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actually my exhaust tips on the acadia used to get black pretty often, for about the first 10-15K, not sure what changed, but they are not that bad at all now.

I remember when port injection first come out, and it was crazy how much build up would get in the intake systems. Im sure DI is the same way only now carryed into the valve system. Guess thats what warranty's for. :)
 

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I have noticed the mention of Tier 1 gas. The label under the hood on my Equinox that was manf. in Jan 2010 (4 cyl) says Tier 2. What is the diff?
 

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Once or twice a year I throw in some Techron, on all my vehicles. According to all the reviews I've read on injector cleaners it is the best, but it is expensive so I wait for 2 for 1 sales.
I bet if you never use it, your car will not explode. :)
I do it for piece of mind.
 

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They chevy gm guys around here say not to use any until at least the car/truck is 5 years old or older. New car now a-days do a lot better and with the new tech. in the gas. I like shell and conoco. Good old Conoco from the US!!!
 

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The big problem is filling up your car right after the tanker just filled the stations tank and all that gunk and sediment is all stirred up and is now in your tank.
 

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We have WaWa and Scheetz here and thats pretty much it. Local Citgo is old as dirt. They're pumps don't even take credit :eek:

I will use sea foam or techron or something once I know its safe. I know nothing about this I4 engine so I have a lot of reading to do.
 

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NHOJWOLFE said:
Here is the info on tier 1 gasoline
http://www.toptiergas.com also refered to as top tier
here is a write up on tier 2

http://www.epa.gov/tier2/

hope this helps
Is there a list of the Tier 2 retailers? I have searched, but have not found anything. Most of the stations shown on the Tier 1 list are unknown to me and not in the deep South (1-10 corridor especially). Below is the Tier 1 list with asterisks beside the ones that are down here. Most of these stations are 5 to 10 cents higher than the others. Where is Valero on this list.


QuikTrip
Chevron ***
Texaco ***
MFA Oil Co.
Conoco ***
Phillips 66
76
Entec Stations
Shell ***
The Somerset Refinery, Inc.
Kwik Trip / Kwik Star
Aloha Petroleum
Tri-Par Oil Co.
Turkey Hill Minit Markets
Mileage Stations
Road Ranger
CountryMark
Chevron Canada
Shell Canada
Petro-Canada
Sunoco Canada
 

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Does anyone have thoughts on Lucus Fuel System Treatment/Injector Cleaner? Seen their ads and curious as to if it's a benefit or waste of money...

What is the best fuel treatment product on the market (other than Tier 1) ?
 

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Techron
 

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Bad Dave said:
Does anyone have thoughts on Lucus Fuel System Treatment/Injector Cleaner? Seen their ads and curious as to if it's a benefit or waste of money...

What is the best fuel treatment product on the market (other than Tier 1) ?
Its really a waste on a DI engine. You'll clean the injectors but that is it.
 
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