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I think the bottom line on the simple fuel system cleaner additives that are widely available, though, is to get Chevron's Concentrated Fuel System Cleaner. You can also use their Injector Cleaner if that's all that's available. Both have the same active ingredient (PEA), but the FSC is about twice as concentrated as the IC. The bottle of the concentrate stuff looks like: Chevron 65740 Techron Concentrate Plus Fuel System Cleaner - 20 oz. : Amazon.com : Automotive There are other products that have good amounts of PEA. I think Redline's fuel treatment does as well, for instance. But the Techron's the one to remember because you can buy that just about anywhere, even a lot of gas stations. |
Seafoam has a great placebo effect. I've helped take some V-twins apart that were Seafoamed. Other than a smoke show, I didn't see any of the claimed results
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I can't voutch for its effectiveness. The only time I used it was when I put my gixxer in storage for a year and someone mentioned about running some seafoam through it before buttoning it up. Started/ran fine a year later.
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I put a half bottle in my gas tank twice a year. Just to keep the injectors and valves from gooking up.
I've also been using it for years, back in my DSM days. It did wonders on carbon buildup. |
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Is it a once/twice a year sort of thing, or every fill up? |
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Because I thought it kept the lines clear, and it recommended to do so on the bottle... Mind you, the STP Gas Treatment in every tank, not the Fuel System Cleaner. I only did that 2x a year. Forgive me for not differentiating the two earlier. |
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I haven't done it to the Z in quite a long time now... but in place of that, roughly every 2nd or 3rd track weekend or so, I put a half tank of unleaded race fuel in the car, 98-octane Sunoco 260 GTX is usually what's available at a track pump. I figure that and the hard driving on a hot engine keeps things pretty pristine in there. It's normal street-driving conditions that gunk things up more. |
I use the techron cleaner right before each oil change. Always have. I can't imagine needing to add a cleaner any more often than that. Good gas has plenty of detergents already.
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Where is the evidence it actually does anything to clean the valve train? Where is the independent data on improved gas mileage or whatever other claims it purports? I wouldn't pour this gunk into the engine. I'd say its as likely to weaken seals or gunk EVAP valves as it is to remove any presumed carbon deposits. That users report no apparent harm (other than a CEL!?!) is hardly a ringing endorsement. That the car "runs smoother" afterwards is shaky anecdotal evidence at best. Anyone adhering to a regular maintenance schedule, using top tier fuel, and perhaps after 60 - 200K miles a proper fuel injector cleaning service (rather than just dumping extra detergents into the tank) is doing plenty to keep the engine in excellent running condition for several hundred thousand miles easily without adding this alchemist's brew. |
Zxax
I've used Zmax on my EVO before I sold it and bought my Z and immediately went and got the Zmax 3 bottle kit for my Z. Haven't put the transmission formula in ( results pending on CVT trannys ). Definitely works better than sea foam. And if Carroll Shelby used it in EVERY car he built/owned, it's good enough for me. ( and I don't think paying him as a sponsor is why he used it, like he needed the money ). He stood behind the product and the tests do as well.
Tests Prove zMAX Works, SAE testing | zMax Micro-lubricant |
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