Just wondering, is there any fuel additives I could/should be adding every so often? '10 SS here. I was thinking fuel injector cleaner but its direct injected so thats a no I'm guessing? I'm just looking to do everything I can to make this beast last as long and well as possible! Thanks for any replies

 

good question. idk the right answer, but i add the injector cleaner u can get at autozone or wherever maybe once every few thousand miles, not LNF THO

 

you can do all of that... but its a 2010... im not sure you need it... and if you do anything like that, your not going to see much of a difference...

but once every other month i do go to the advanced and pickup the fuel injection cleaner thing... yellowish, 6 dollars...

 

I add STP injector cleaner every 3-4 fill ups. I have to say that on that fill up I can get 3-4 mpg more than when I don't use it.

 

injector cleaner every time i change my oil

 

GM recommends Chevron Techron every oil change if you are unsure about the quality of your fuel

 

GM's recommendation on fuel additives for the 2010 Cobalt is as follows:

"To help keep fuel injectors and intake valves clean, or if the vehicle experiences problems due to dirty injectors or valves, look for gasoline that is advertised as TOP TIER Detergent Gasoline. For customers who do not use TOP TIER Detergent Gasoline regularly, one bottle of GM Fuel System Treatment PLUS, added to the fuel tank at every engine oil change, can help clean deposits from fuel injectors and intake valves. GM Fuel System Treatment PLUS is the only gasoline additive recommended by General Motors."

I hope this is helpful for you,
Sarah
GM Customer Service

 

Everyone up to this point has said to keep fuel additives away from the direct injection engine in the 08-10 SS.

At that pressure you see no benefit.

Also, the fuel doesn't pass over the intake valve so you get no benefit there.

HUGE waste of money.

Therefore disregard Sarah's post all together.

 

It would be good for cleaning the injectors but that's it.

I seafoam my lnf every oil change.

 

Think about how much fuel additive would be exposed to your injectors at 2000psi.

It's like spitting in the ocean.

 

which method do you use for seafoam. Oil, gas, or vacuum line?

 

I do all 3. Ill put 1/3 thru the intake mani, 1/3 in the oil, 1/3 in the gas. I mainly do it to keep the intake valves clean tho. Direct injection can be a pita sometimes.

 

My apologies Sarah, we unfortunately have some neanderthals here who think that only they can contribute to a conversation.

 

Wasn't being a dick, her post is obviously a quote from their handbook. It obviously doesn't necessarily apply to the LNF engine because it states cleaning of intake valves. Which makes it wrong.

I was trying to think of a caveman quote, but I got nothing.

 

Shell advertised that their gas will clean the valves on DI engines too. Better tell them their ad is wrong too. No fuel isn't going over the valves but I'd guess that both companies have smart enough people to know something we don't.

 

Pretty sure it was one of the GM engineers that told us not to use additives.

As for saying: good marketing= smart Shell engineers. That's a bit naive.

 

If it was a straight up lie someone in our sue happy country would do it.

 

for all you guys saying the DI motors don't need this, just because it may not touch the valves or anything like that doesn't mean the additives don't keep your fuel filter cleaner and your fuel lines cleaner as well.

just saying.

 

Yea seafoam is good stuff, BEFORE you change ur oil right after only.

1/3 tank, 1/3 oil, rest in a vacuum line. let site for 15 mins, start that ***** up and rev like crazy for 10 mins lol

 

I was just doing a little research, anyone ever read this article?

Never thought of contamination on returnless fuel systems or misfires while turning.

GM Techlink: Search Results

 

Well I'll price the stuff from advance auto and see how it works. I bet the GM stuff is overpriced, I'm guessing? lol

 

GM Fuel System treatment is overpriced, just get Chevron Techron concentrate. Its even same bottle

 

There's still fuel getting to the valves, just not as much as a regular fuel injection system. You have to think, how is that carbon getting on the backside of the intake valve if its completely sealed off to the combustion chamber right before ignition? I'm sure valve float is partially to blame, but regardless, there is a very small fraction of a second the intake valve is open during combustion.

 

i used to use the lucas stuff in my old car and it worked good used it like once a month

 

I use the octane booster too, which also has the function of a injector cleaner. If they don't work as injector cleaner, as least I get some more octanes