Seafoam
Moderator
Joined: Jul 2011
Posts: 6,508
Likes: 657
From: Sioux Falls Area
I have. Did no harm, but didn't solve the problem I was hoping to solve.
Seafoam is good stuff. I've used it several times in the crankcase. Generally speaking, if something is stuck due to varnish but up, the seafoam will clean it in one treatment.
Of course, it can't fix a broken part.
Seafoam is good stuff. I've used it several times in the crankcase. Generally speaking, if something is stuck due to varnish but up, the seafoam will clean it in one treatment.
Of course, it can't fix a broken part.
Fleet Mechanic
Joined: Nov 2003
Posts: 1,311
Likes: 7
Word of advice though, if you run it through your crankcase, I would do it within 150 miles or so of your next oil change. Don't want that excess carbon buildup circulating through your engine for to long.
More Turbo
Joined: Jun 2014
Posts: 718
Likes: 92
From: Asheboro, NC
Crankcase no, fuel tank yes. It's good stuff and just like StarTron, etc. I see no harm adding some to fuel once in a while particularly on a long trip when I know it won't be diluted much. For the crankcase I wait until it's time for an oil change and, starting with a cold engine, dump in 1 1/2 qt (I use 1 qt for 5 qt capacity) of varsol and run until warm and change it. Varsol is an industrial solvent but similar stuff can be found at AutoZone, Advance, etc by searching for "engine flush", just follow the directions on the bottle. If it would make you feel better, b/c some folks are so freakin' **** about "getting every single minuscule drop" out: change oil, run for a day or two and change oil again. I do not do this, never have.
New User
Joined: Feb 2018
Posts: 2
Likes: 0
I buy it by the gallon... for 20yrs I've used Seafoam in all my small engine equipment,, boat, cars, etc. However, I have never run it in the crankcase, as I use Mobile One and Royal Purple that prevents build up. I have put 150,000+ on vehicles several times with out any engine issues beyond regular maintenance. If you use clean oil and see noteworthy results please post results
More Turbo
Joined: Jun 2014
Posts: 718
Likes: 92
From: Asheboro, NC
I buy it by the gallon... for 20yrs I've used Seafoam in all my small engine equipment,, boat, cars, etc. However, I have never run it in the crankcase, as I use Mobile One and Royal Purple that prevents build up. I have put 150,000+ on vehicles several times with out any engine issues beyond regular maintenance. If you use clean oil and see noteworthy results please post results
So based on the above I also used Valvoline in a '10 for 45,000 miles and anticipated going much, much longer but an old lady yakking on the phone blew a stop sign and T-boned me at 60 mph. Destroyed it. I promptly bought another F-150 based on that crash, making sure my '13 has the same airbag setup. She hit me down low, right at the driver's door and I never touched a thing. I have no doubt the seat back and headliner airbags saved me from severe brain damage or worse.
I have always highly recommended oil sample analyses too. I use Blackstone Labs, they've always done good by me for cars, trucks and bikes. -> https://www.blackstone-labs.com/
Last edited by rbentnail; Feb 26, 2018 at 09:20 AM. Reason: mah spelin sux, knead moor cawfey.
Elder User
Joined: Oct 2016
Posts: 706
Likes: 6
Depending on your engine it won't hurt anything. I use it in my polaris rzr, ninja, kia sorento (non turbo) and most vehicles before that. It has helped clean up rough idle in those vehicles.
I will not use it in my f150 3.5l ecoboost.
Large carbon chunks can break off using sea foam and then be sent through the turbo destroying them. It can also overheat the turbos as it burns hotter.
There is other stuff available for the turbo engines like CRC GDI intake cleaner which supposedly dissolves the carbon instead of breaking it off.
I will not use it in my f150 3.5l ecoboost.
Large carbon chunks can break off using sea foam and then be sent through the turbo destroying them. It can also overheat the turbos as it burns hotter.
There is other stuff available for the turbo engines like CRC GDI intake cleaner which supposedly dissolves the carbon instead of breaking it off.
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