Fuel Additives

ice raptor

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I've used this before on a old Ford 4.2... and those engines had a track record for deposits. Based on our DI, I don't see any other product like this that would work to decarbonize. Any of the 'add to the tank' additives wouldn't remove any deposits at the valves.

I will say, while the 4.2 did blow smoke during the cleaning process there was no noticable improvement in the performance of the engine. It was at ~190k miles and tended to have a lot of detonation, regardless of octane rating used.
And its also a ford....
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charleswrivers

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And its also a ford....
Considering his F-150 is from 2001 and is still running today and did everything my father needed through the last years 14 years of his life... I think he got his money's worth.

To my knowledge, other than a few batteries, rotors, pads and a set to shocks/struts... it's body and powertrain have had no money put into them. It's just getting tired after now 200k miles. It's a work truck and had a hard life. I hope my Civic does as well.
 

ice raptor

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Miracles happen i guess. I'd put my faith in my civic that it will last that long with no major hiccups. Its what honda is known for. Reliability.
 

charleswrivers

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Miracles...?

We've still got a 1980-ish F-350 running it's 300 straight 6... original engine and 4 speed manual transmission. The family *still* use it to haul cattle in the back of it (has a large wooden box built, as it was bought as a flat bed) since day one. It's been used to haul our crops to be shipped from trucking terminals 5 days a week for 30 years until they wrapped most of the farming as the generation retired... hay to our cattle in pastures to supplement their food and we'd even go on 'hay rides' singing around Christmas time.

https://www.google.com/amp/s/jalopn...line-six-is-one-of-the-greates-1795351528/amp

Honda's as passenger cars are outstandingly reliable... but I would not be so quick to question the longevity or durability of American work trucks. Even if they're not your preference to own... that doesn't mean they're unreliable junk.

You can take pride that they have actually been able to build vehicles that can literally last 1/2 a human lifespan and keep on going. There's nothing unusual about these examples as any/all of the trucks we ever used lasted in excess of a decade and over 200k of the toughest miles you can throw at them with a minimum of maintenance. This is a mix of Ford's, Chevy's and one Dodge. The unibody frame Ridgeline with it's hand-me-down powertrain from the Accord/Pilot/Odyssey is competent, but I would doubt it'd be suited to daily 'truck' tasks.

But... I'm off topic. I hadn't intended to turn my cleaning experience on a Ford engine as a defense of American truck longevity... but... you got me. America knows how to make a pickup truck.
 

Design

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The key is making sure the cleaner is properly atomized through the TB. The combination of heat and the cleaning agent should put a good dent in any deposit accumulation. But it's obviously not as effective as walnut media blasting.

We ran back to back tests in the Mazda community where the IM was removed after injecting CRC GDI cleaner. There was noticeable improvement in reducing the hardened deposits to a gummy residue (which was subsequently burned off with additional driving at operating temps).
 

RoB y4h3ll

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I've used this before on a old Ford 4.2... and those engines had a track record for deposits. Based on our DI, I don't see any other product like this that would work to decarbonize. Any of the 'add to the tank' additives wouldn't remove any deposits at the valves.

I will say, while the 4.2 did blow smoke during the cleaning process there was no noticable improvement in the performance of the engine. It was at ~190k miles and tended to have a lot of detonation, regardless of octane rating used.

This works great if you buy the liquid version to put in your crankcase. 1oz per quart to does the trick nicely. I had a 2006 chevy silverado with a tick. Sea Foam cleared it right up! Both in the intake like you showed up there and in the crankcase. I poured the rest in the tank and the ticking stopped within 15 minutes of driving it.

On the other note, I have a separate issue with an additive I used in my 2020 civic Si... I ended up having to grab gas at a shady gas station in the middle of nowhere, and wouldn't you know it, the station only had 87 octane. Lol... So while I was inside putting 30 on my pump, I grabbed some STP octane booster. I drove the car the rest of the way home, and the entire time the car felt slower than usual. I felt bad running the fuel, so I then proceeded to add the booster to my full tank of crap gas and then the problems started. Five minutes after driving it, I started doing some boost creeping in the city near home and started to hear some occasional pinging at 30-40% throttle. So as you know it, pre-detonation is not good for the engine what so ever. I then immediately stopped boosting as much as possible, and started to drive as much as possible to burn as much fuel I could with out letting the car ping anymore. I've now diluted the fuel as much as possible with 93 and for the most part its stopped no matter how the car is being driven. My main concern now is that my car was running very rich during this time. I wiped off suit from the HDMI to prove it. What are your thoughts with this? I didn't know that running a booster in the car could hurt it.. I'm so mad at my self for even doing this.
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