FP60 by
www.lubecontrol.com
For the price of 3 bottles of techron you get enough FP60 to treat over 600 gallons of gas.
Plus, most fuel injector cleaners are nothing more than aromatic solvents (kerosene, xylene, toulene, etc) and are highly over priced.
FP60 is a unique formula...and they just won't admit what it is. But it certainly doesn't smell like kerosene.
Here's picture of my heads on my crown vic after a few thousand miles of FP60 use.
http://www.dantheoilman.com/images/valvedirty.jpg
http://www.dantheoilman.com/images/valveclean.jpg
The side of the port that directly gets sprayed by the injector is clean. I couldn't manage to get pics of the valves, but they were spotless too.
Here's a copy and paste from an S2000 board:
Pennzoil Gumout Regane
60-70% kerosene
30-40 Polyether amine
Analysis: I don't see anything in them that would harm a car
Gumout Xtra
90-95% kerosene
5-10% detergent
Analysis: I don't see anything in them that would harm a car
Chevron Techron:
30-50% hydrotreated petroleum distillates
10-25% Stoddard Solvent (similar to kerosene)
5-10% Naptha
1-5% Benzene
.1-.5% Xylene
Analysis: Naptha, Benzene, and Xylene are strong solvents, but I do not believe they are used in enough volume to cause problems.
Valvoline Complete Fuel System Cleaner:
52 - 62% Kersosene
28-38% Light hydrotreated petroleum distillate
6-16% Stoddard Solvent
Analysis: A good formula, should have no negative affects on seals, similar to Techron but without the stronger solvents.
Amsoil Performance Improver
80% petroleum distillates
No other compounds identified
Analysis: Safe, but without full disclosure of any other compounds, one must reserve judgement against the other, more technically advanced cleaners like Techron and Red Line SI-1.
Red Line SI-1
1-5% Alkenylamine
1-10% Isoctanol
1-10% 1,2,4 Trimethylbenzene
5-20% Aliphactic Napthta
Analysis: A very complete formulation: detergent/dispersant, corrosion inhibitor, fuel additive. It has an alcohol which will help disperse any water, several strong solvent cleaners, and a detergent. Very comparable to Techron, perhaps a bit stronger, so be sure to use it full strength only when properly titrated, or in smaller amounts for continuous cleaning.
The above comments are not mine.
The old BG44K was nice because it had PEA in it. Now it doesn't have it and is a rip off.
I'm also currently trying out AMSOIL's PI to see if it gives me the same mileage increase FP60 does, but I have my doubts it will.