IMHP...I would avoid Seafoam like the plague......Seafoam is a "Highly Corrosive" product and isclearly spelled out in the MSDS....something I would not have any desire toexpose to fuel injectors, sensors (including O2) & hoses of any type. Thereare those that will state "Used it for years & no problem", andvery true, but it simply violates every basic OEM specified maintenance/repairprocedure & law of chemistry in the books..... no mfg including domestic & imports (including BMW,MB, Porsche) advises using any product like this (or similar) for any servicework on a fuel injected system. Documented damage goes back decades.
There is lot of things that many people do to their engines,that is well document "Not to do"..............like I said, it'sbasic chemistry........that which we were all taught......with any product likethis, always read the MSDS.....
1. Pale oil......cheaprefinery distillate (Why somebody would fog their cat and o2 sensors withplumes of lubricant is beyond me as this is what destroys/clogs up cats)
2. Napthalene......whichis dry cleaning fluid, an Aromatic which means it is a "toxin"affecting directly the liver, kidneys, spleen, etc.
3. Isopropylalcohol......not good for an engine (as this is alcohol and water http://seafoamsales.com/wp-content/u...seafoam_EN.pdf
As listed under "Other important hazards", It alsohas "teratogenic" properties......Meaning there is an effect uponyour DNA...meaning you are ok but you future kids come out "screwedup", cell structure abnormalities, cancers, etc....and yes, you aresucking this in when it dumps out your exhaust pipe....or if you are drivingdown the road to clear it out, to your neighbor whose behind you....and thereis "no cure" for this.
Listed under "Hazardous Combustion Products"(meaning when its burning), it produces sulpher oxides (just what youwant....feeding sulpher particulates into the cats) & phosphoruscompounds.....this is not even close to being "good" for any plastic,o-ring, metal (like pistons, piston rings, residual that might bypass thepiston rings and make it into the oil, e-sensor, the honey-combs inside thecat's). While the MSDS does not spec the ph of the product, if you measure theexhaust at the point of discharge, you'll crap in your pants when you see theph change
..and for those who may think that the engine combustion will burnall this up....remember, poisons are destroyed at 1,800 degrees and toxins aredestroyed at 2,500 degrees F......not even the cats are close to this.
Ultimately, the only way to really clean all the carbon deposits off the valves, etc. is to conduct an intake/exhaust chamber cleaning with high pressure using crushed walnuts.. which few companies have any experience with....
The other is to locate an BG "Service Center" (ie a shop that has been trained and owns the BG products intake cleaning system...and yes they have them in your area...including new car dealers)
For general maintenance, 1/2 oz of acetone per gallon of gasoline is an excellent cleaning agent and fuel stabilizer.... it adds 1 oxygen molecule to the "mix' so to speak and helps keep fuel fresh and cleans the cats as well.