IS - 2nd Gen (2006-2013) Discussion about the 2006+ model IS models

Seafoam IS350

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Old 03-09-16, 09:02 AM
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oscar55773
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Default Seafoam IS350

Is SeaFoaming my 2006 IS350 a good option to deal with carbon build up? it has 138,000 miles I'm the second owner should i do this and is itsafe for my motor. thank you
Old 03-09-16, 09:19 AM
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DickH
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I sea foamed my car a few weeks ago with 90k on my is350 and haven't encounter any problems. Im not sure how well it worked but I had the usual cloud of smoke.
Old 03-09-16, 09:56 AM
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Eduskator
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I'm sorry to tell, but the IS350 doesn't suffer from carbon buildup issue... It is strictly related to 2.5L engines.

You could always do it. It doesn't harm the engine and I only heard great stuff about SeaFoam. There's a Before and After video on YT (they put a camera into sparkplug hole and explain what it does), you might want to check that out.
Old 03-09-16, 09:59 AM
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20LS01
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Unnecessary. Give it some repeated WOT and decelerations and that will clean things up. Seafoam can foul up your spark plugs, o2 sensors and catalytic converter.
Old 03-09-16, 12:41 PM
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Gville350
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Originally Posted by 20LS01
Unnecessary. Give it some repeated WOT and decelerations and that will clean things up. Seafoam can foul up your spark plugs, o2 sensors and catalytic converter.
Agreed! These vehicle's sensors are so sensitive and adding a cleaner like Seafoam might do more to fowl these up instead of clean them.
Old 03-09-16, 07:06 PM
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mandyfig
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Seafoam will not hurt your 350. Use it on my SC and RX all the time.
Old 03-11-16, 07:26 AM
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355F1
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Originally Posted by mandyfig
Seafoam will not hurt your 350. Use it on my SC and RX all the time.
I've used Seafoam on my old Honda Civic, BMW 330ci ZHP, and Ferrari F355. Never had any issues and it helped a rough idle on my 355 after one use.
Old 03-11-16, 08:14 AM
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ohiois350
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Can we just pure that seafoam in the gas tank and let it does it job? I really want seafoam my mom highlander but i dont know how to use that thing
Old 03-11-16, 02:26 PM
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VTsuckah
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Originally Posted by ohiois350
Can we just pure that seafoam in the gas tank and let it does it job? I really want seafoam my mom highlander but i dont know how to use that thing
There's this little interwebs thing called youtube that may be able to help you.
Old 03-12-16, 12:25 AM
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MWIS350
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Seafoam been around for a long long time. I used them before and the car seem smoother, but only used every 10,000 mile.
Old 03-12-16, 01:07 AM
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markjustus
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Originally Posted by MWIS350
Seafoam been around for a long long time. I used them before and the car seem smoother, but only used every 10,000 mile.
same routine here! used it on previous cars, rsx type s, e36m3, 87 cressida
Old 03-20-16, 08:15 PM
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BrandoAU
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had my whole intake and all seafoamed, and replaced the plugs after. Went from 25mpg highway (ethanol) to 28. Got 31 with non-ethanol gas. 2008 is350 127k
Old 03-20-16, 09:58 PM
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Tro209
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Originally Posted by 20LS01
Unnecessary. Give it some repeated WOT and decelerations and that will clean things up. Seafoam can foul up your spark plugs, o2 sensors and catalytic converter.
If this is all it would take our 350's from ever having carbon build up issues (if thats even possible since thats a IS250 problen) then my car will never have to deal with that lol.

I give my car some nice pulls every day and she still runs like a champ!
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