[bizzleb109]

Hi I have a 2007 335i and a 2009 740il, ive been using fuel cleaners like redex and slick 50 but have never really felt a difference, I keep hearing on the forum references to fuel cleaner called Techron and previously use to hear things about seafoam. I would like to know which is the best to use, my cars do drive nice but just feel that they are drinking a little too much fuel. Also if either has been used what was your experiences and did you feel a difference after using the products?

Thanks

[GnomeChild]

I use Chevron Techron as well as only ever filling up with Chevron Gas or Shell if it’s an emergency. If you were to ask me, I don’t exactly think it does much or haven’t felt a difference; it’s more for peace of mind

[Bimmer_Engineer]

I don't think it hurts to use fuel injector cleaner but i don't think it offers as much benefit for direct injected cars. Typical fuel injector cleaners are used to clean the injectors and the intake system including the valves. Since the fuel doesn't touch the valves it's not cleaning the most important part of the intake tract...I also don't know for sure but I can't imagine that much can build up in the fuel injectors considering they're running at 2,000 psi...

[tony55343]

I use Techron, its not a magic potion but I'm sure it does help at least a little. Small investment to use every once in a while !

[Pladi]

they dont do anything, none NADA. And if they do you have bigger issues.

[BravoJohny33]

Nothing.. Just use top tier gas and you are good to go.

[snedanator]

Techron or BG44k....Or Royal Purple Max Atomizer. Techron is probably the favourite.

[BimmerNugget]

I use techron full fuel system cleaner (not the injector cleaner) because apparently it's identical to the fuel system cleaner BMW sells.

https://www.fcpeuro.com/products/bmw...AaAmX3EALw_wcB

I get the techron for $4.94 at Walmart, I use it "just because". Never really felt a difference. It's cheap enough for a little peace of mind. But I wouldn't get it if I was forced to buy it at Autozone or any other chain autoparts store because it's expensive at $8-$9.

[TheMidnightNarwhal]

Originally Posted by GnomeChild

I use Chevron Techron as well as only ever filling up with Chevron Gas or Shell if it’s an emergency. If you were to ask me, I don’t exactly think it does much or haven’t felt a difference; it’s more for peace of mind

I want to use it but right now my injectors are working fine don't want to F something up like maybe a small particulate could clog or break something or am I paranoid?

[TheMidnightNarwhal]

Originally Posted by BravoJohny33

Nothing.. Just use top tier gas and you are good to go.

I switched to that to when I bought the car.

I'm surprised I have not seen this advertised more at gas stations that are Top Tier certified

[nsjames]

Originally Posted by TheMidnightNarwhal

I want to use it but right now my injectors are working fine don't want to F something up like maybe a small particulate could clog or break something or am I paranoid?

if there's something in there that will damage an injector, or the HPFP, no fuel system cleaner is going to do anything about it.

[mweisdorfer]

I think when you have fuel injectors that cost $1500.00 brand new, it would be silly not to run a bottle at least 2x a year. I have used techtron, redline and am now using Liqui Moly.

[nsjames]

but it's practically useless in a GDI car.

you'd be better off dribbling a little two stroke oil in the fuel when you fill up to lubricate the HP fuel system parts.

[Bimmer_Engineer]

Originally Posted by nsjames

but it's practically useless in a GDI car.

you'd be better off dribbling a little two stroke oil in the fuel when you fill up to lubricate the HP fuel system parts.

I kind of agree with you...I don’t know this for sure but I am a mechanical engineer and I can’t envision what benefit it would have since it was developed for lower pressure fuel injected cars where the fuel washes the intake manifold and valves...and deposits tend to build up on the injectors. With a rail pressure of 2000 psi I can’t imagine anything building up on the injectors. That said I also can’t see what it would hurt...

Disclaimer: I work for chevron so personally I’m totally in favor of y’all running plenty of Techron...

[snedanator]

Originally Posted by TheMidnightNarwhal

I want to use it but right now my injectors are working fine don't want to F something up like maybe a small particulate could clog or break something or am I paranoid?

it's ok to use as a maintenance thing.....it wouldn't fuk anything up. I would put a bottle in half a tank every 2 months maybe, and run it fairly hard for that half tank :-)

[nsjames]

Originally Posted by Bimmer_Engineer

I kind of agree with you...I don’t know this for sure but I am a mechanical engineer and I can’t envision what benefit it would have since it was developed for lower pressure fuel injected cars where the fuel washes the intake manifold and valves...and deposits tend to build up on the injectors. With a rail pressure of 2000 psi I can’t imagine anything building up on the injectors. That said I also can’t see what it would hurt...

Disclaimer: I work for chevron so personally I’m totally in favor of y’all running plenty of Techron...

I look at the modern GDI stuff and treat it just like diesel engine stuff, because for the most part that's all it is, common rail high pressure injection.

the biggest failing in all of it is a lack of lubricity in the fuel, which leads to damage in the HPFP caused by scoring.
That's why if you get water in your fuel it's all bad, and generally leads to replacing all of it. The HPFP losing lubrication galls and scores itself to death and sends all that trash further down the rail to the injectors.

so again, you're better off regularly dosing your fuel tank with a small amount of oil to ensure that the HPFP gets adequate lubrication. There are even several additives from the diesel world that would work great. Stanadyne makes a lubricity additive for their DB line of rotary pumps. That's literally all it does is add lubricant to the fuel. The same can be accomplished with a touch of two stroke oil.

[Welcome to NBA Jam]

If you already use a high quality gasoline, there is no need to run a fuel system cleaner.

[BimmerNugget]

Originally Posted by Welcome to NBA Jam

If you already use a high quality gasoline, there is no need to run a fuel system cleaner.

What exactly is "quality" gasoline? The octane rating? or the brand of gasoline?

Is BP (with invigorate) good? It's near my house and I use it 90% of the time. No Shell near me so I almost never use shell. Back in college, I used BJ's Wholesale Club gas.

Is BJ's gas good?

[Welcome to NBA Jam]

Originally Posted by BimmerNugget

What exactly is "quality" gasoline? The octane rating? or the brand of gasoline?

Is BP (with invigorate) good? It's near my house and I use it 90% of the time. No Shell near me so I almost never use shell. Back in college, I used BJ's Wholesale Club gas.

Is BJ's gas good?

Quality gasoline primarily is the amount of detergents added to the gas, and their cleaning effectiveness. There is a minimum level of detergents that are federally required to be added. Pretty much all name-brand gas companies exceed these standards. A list of recommended gasoline brands can be found here: https://www.toptiergas.com