Gumout... does this stuff actually work??

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LTC8K6

Lifer
Mar 10, 2004
28,520
1,575
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Gasoline from any reputable supplier has all the cleaning agents and lubricants you need. The Gumout is a waste of money.

Unless there is a reason to suspect that you have dirty injectors, there is no need for you to "clean" your fuel system. Or lubricate it. It's already taken care of.

Also, if your injectors or fuel system were dirty enough to make your engine run poorly, the gumout won't help. You'd need a proper cleaning from the dealer or a good mechanic.
 

Vette73

Lifer
Jul 5, 2000
21,503
9
0
Does not hurt but does not really help.

For it to be strong enough to really clean it would damage other parts of the cars (seals, gaskets, etc...)

You can spray out the throttle body and do more good then this stuff will ever do.
 

Vetterin

Senior member
Aug 31, 2004
973
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71
Like the others have said a quality gas will have all the additives needed to keep your injectors clean but if you insist on pouring something in your take I would suggest Techron and only once every 10K miles.
 

Nemesis 1

Lifer
Dec 30, 2006
11,366
2
0
Gasoline from any reputable supplier has all the cleaning agents and lubricants you need. The Gumout is a waste of money.

Unless there is a reason to suspect that you have dirty injectors, there is no need for you to "clean" your fuel system. Or lubricate it. It's already taken care of.

Also, if your injectors or fuel system were dirty enough to make your engine run poorly, the gumout won't help. You'd need a proper cleaning from the dealer or a good mechanic.

What he said is a fact . We run Mobile gas only. The only additive we use is Heat one in the fall and I doubt we need it.
 

HannibalX

Diamond Member
May 12, 2000
9,359
2
0
Seaform it :D 3rd can in gas tank, 2/3 in brake booster line.

Yup, best cleaning you're going to get outside of a machine like a motorvac.

The idea is to let the first can stall the engine. Let it take half the can slowly and the second half quickly so it stalls. Then let it sit for an hour and fire it up. If you see black or gray smoke it's cleaning, if you get mostly light gray smoke your system was already clean.
 
Aug 23, 2000
15,509
1
81
Yup, best cleaning you're going to get outside of a machine like a motorvac.

The idea is to let the first can stall the engine. Let it take half the can slowly and the second half quickly so it stalls. Then let it sit for an hour and fire it up. If you see black or gray smoke it's cleaning, if you get mostly light gray smoke your system was already clean.

Plus seeing the fire truck show up with loghts flashing in the huge smoke cloud you create is actually quite pretty. They weren't to happy with me when I smoked out my neighborhood with my 91 GTA.
 

Pacfanweb

Lifer
Jan 2, 2000
13,155
59
91
Seafoam won't do anything for carbon that using a small vacuum hose and sucking in a bottle of water can't do.

You're just as well off to just pour a can of ATF down the throttle body. It'll give you the same smoke show that Seafoam will.



BG products are FAR superior to Seafoam. There are several others I know of that are used by dealership shops that are good as well.
http://www.bgprod.com/products/fuelair.html
 

foghorn67

Lifer
Jan 3, 2006
11,883
63
91
Gasoline from any reputable supplier has all the cleaning agents and lubricants you need. The Gumout is a waste of money.

Unless there is a reason to suspect that you have dirty injectors, there is no need for you to "clean" your fuel system. Or lubricate it. It's already taken care of.

Also, if your injectors or fuel system were dirty enough to make your engine run poorly, the gumout won't help. You'd need a proper cleaning from the dealer or a good mechanic.

This. Back in the day, it was a good idea to pour in STP, Gumout or whatever. Now with Techron, V Power, etc...you'll get good cleaning agents without having to buy a bottle of anything. This is why I insist on getting brand name fuel. Shell, Chevron, Mobil are actually really good at researching cleaning agents.

Today's random trivia: Fuel additives are kept in the truck's tank if it had to buy fuel from another brand's terminal.
 

Howard

Lifer
Oct 14, 1999
47,982
10
81
This. Back in the day, it was a good idea to pour in STP, Gumout or whatever. Now with Techron, V Power, etc...you'll get good cleaning agents without having to buy a bottle of anything. This is why I insist on getting brand name fuel. Shell, Chevron, Mobil are actually really good at researching cleaning agents.

Today's random trivia: Fuel additives are kept in the truck's tank if it had to buy fuel from another brand's terminal.
What are the dosing and dispersion methods for those additives?
 
Aug 23, 2000
15,509
1
81
Seafoam won't do anything for carbon that using a small vacuum hose and sucking in a bottle of water can't do.

You're just as well off to just pour a can of ATF down the throttle body. It'll give you the same smoke show that Seafoam will.



BG products are FAR superior to Seafoam. There are several others I know of that are used by dealership shops that are good as well.
http://www.bgprod.com/products/fuelair.html

Please, enlighten us as to your methodolgy for proving that Seafoam doesn't do anything more than water. Just because a product is used by a dealership does not mean it is a good product.
I've seen the before and after of Seafoaming and it does what it says it does. It cleans out the crap from your engine.
Granted newer gas has cleaning agents ect in them, but in motors that have been around since the 70-80's they didin't have the luxury of Techron and other stuff.
 
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