Automotive

Engine carbon cleaning

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  • Dec 16th, 2019 4:26 pm
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Mar 1, 2005
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All of those treatments work better at cleaning your pocket than cleaning your engine.

Only think that will work from all my reading is blasting and a couple of aftermarket mods that you use in conjunction with an Italian tune up.
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price error
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Last edited by drz400 on Jul 25th, 2022 9:58 pm, edited 1 time in total.
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Messerschmitt wrote: GDI, worst invention ever. Glad my car is lower tier and came with MPI
Translation: I don't understand how engines work
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Mar 22, 2004
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Scotty is usually pretty critical of snake oil, so I'm surprised that he's suggesting this one. I'd be curious if it works.
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ncnmra wrote:

Scotty is usually pretty critical of snake oil, so I'm surprised that he's suggesting this one. I'd be curious if it works.
Even a broken clock is right 2x a day. Scotty is a bit of a raving lunatic. There's much more reliable sources of car info around.
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Carbon deposits still have to go some where? They don't just disappear so kinda skeptical about these snakeoils.
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cristianosham wrote: Carbon deposits still have to go some where? They don't just disappear so kinda skeptical about these snakeoils.
In theory they go out the exhaust as small particles. If you had a lot of carbon, it would be much better to suck them out with walnut blasting, so you don't clog your turbo/cats.
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hightech wrote: TrevorK and burnt69

Thank you for the info. This is indeed news to me as I have always changed the oil on my vehicle following the 8,000 KM/6 month interval using 0W20 Synthetic Oil (Pennzoil Platinum, Toyota, Quaker State). I have never owned a DI engine and always a Fuel Injected one.

I think this info would be something dealerships and others might not inform people of as it hurts their revenue.
Its very counterintuitive to mechanics who have spent their entire lifetimes having lubricant industry propaganda drilled into their head that frequent oil changes are required and beneficial. Also, they tend to see the worst cases of neglect, ie: people who don't follow the owners manual, but perhaps go double or triple the interval, without bothering to check the oil level (the sludged engines almost always have been run low on oil!), so it becomes self-reinforcing.

But once a few moments are taken to understand the chain of events that gives rise to the DI intake contamination problems, it is pretty obvious.

The engine OEMs over the past few years have exerted some pretty major leverage on the oil industry to make better products that are more tolerant of frequent oil changes (ie: lower NOACK volatility numbers), have utilized driver-focused measures such as oil life monitors, and have even cracked down on dealer practice of using oils not sourced from the OEM's supply chains. Outfits like Honda have even made their branded/bulk synthetic fluids available basically at 'cost' to dealers, so the dealers aren't tempted to substitute non-OEM parts.

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