Originally Posted By: electrolover
lol well by god thats what id do lol ta heck with pulling the head if my mower runs like [censored] ill seafoam it in a heartbeat!!
This sort of meaningless, jump-on-the-magical-bandwagon marketing fluff is exactly why people become skeptical of all this add-on, extra-cost snake oil junk: With absolutely nothing to back up the claims but wish thinking, speculation, junk science, guesswork, irrelevant comparisons, popularity judgments, missing, wrong, or incomplete diagnoses, hasty conclusions, hare-brained theories, recitation of marketing slogans, and "because that's how we've always done it" rationality, all claims about additives and expensive maintenance routines are meaningless and serve only to enrich the people selling the product.
Why is it there are so many people here who will criticize the government for spending money wastefully, but then go out and buy all this garbage and don't ever ask the right questions about whether they're getting their money's worth? If there's carbon build-up, why? Is it running rich? Is it overloaded? Did you use the proper motor oil? Was there fuel contamination? Did you put an additive in the fuel that wasn't supposed to be there? Would it have fixed itself if you just followed the recommendations and left it alone? Fairy dust isn't going to fix it if you haven't solved the root cause, but most of the comments here fail to mention any other solutions that have been attempted prior to throwing magical chemicals at it and proclaiming a miracle.
I've tried Seafoam, Redline FI cleaner, and Techron in mowers, generators, 6 different cars and 1 gas-powered farm tractor. Know what the results were? None. No differences or problems solved in any application. Not fuel economy, not starting, not performance, not longevity, not the sticky rings on the Ford 9N, not the sticky float or the crusty carb jet on the Honda generator or mower, NOTHING except I had less money to make charitable donations. The 96 Northstar was the most problematic engine I used it on. Put Seafoam through the brake booster line and ran it in many tanks of gas. Had all the smokiness everybody mentions when I did the induction, followed all the advice. No change. Ran double doses of Techron, no change. Still drank oil, gas mileage didn't change, occasional misfire code after new plugs. Still had carbon on the piston crowns when I changed out the Bosch platinum plugs that fell apart after about 12k miles. Conclusion: Additives are useless, and the Bosch plugs were not worth the $1/each I paid for them.
If I scope the spark plug hole on a Honda GX390 and there's carbon on the piston, I just reinstall the plug and fire it up. Carbon and deposits don't hurt anything. They're a normal part of running an engine, and unless it's definitely causing a problem, I think it's best to leave it alone. If it isn't broke, don't fix it.
If I put MMO, Redline, Techron, Regane, Seafoam, B12, FP, Redline 2-cycle oil, and a pinch of powdered lizard tail in every tank of gas, plus expensive synthetic oil, LG, AutoRX, and MMO in the oil and the transmission, and my car lasts to 200k miles, did the additives do it? Or would it have been fine without all the stuff? What would the costs be over the lifetime of the car with and without this regimen? What could I have done with that money instead of just paying some anonymous corporation to give me peace of mind? Does it prove ANYTHING other than I have obsessive-compulsive tendencies and an overactive imagination? Given all the cars that run until the body falls apart around the engine, while being fed normal, manufacturer-specified maintenance routines, it's a matter of the simplest explanation most likely being the right one. I can't remember ever reading anywhere or being told that an engine died or required expensive repairs because the operator failed to use an additive.
Would that maintenance routine hurt anything? Why do most if not all engine manufacturers specifically state not to use any additives in the oil? What if I did put MMO in every tank of gas and every other oil change in the sump from the time it was new, and the car still required a set of rings and a new fuel injector at 180k miles. Did the MMO do it? Would it have lasted as long or longer before repair without it? What if I bought a Honda that said "use no additives," I followed their advice, and the car required repairs above and beyond its value 15k miles after the warranty expired? Would I buy another Honda? Would the cost of MMO have offset the cost of the repairs? NOBODY KNOWS, yet people come around here extolling the virtues of all this expensive stuff that makes completely absurd marketing claims like it's some kind of chemical savior of all things automotive. I call shenanigans on all of it, just like fuel line magnets, hydrogen injection systems, and the intake tornado thing.