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Old 09-19-2019, 08:48 AM   #1
Scooby Newbie
Member#: 505904
Join Date: Sep 2019
Location: Georgia
2019 WRX

Default Seafoam Fuel Additive

Does anyone have any experience with Seafoam?
He good, the bad the ugly?
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Old 10-15-2019, 06:46 PM   #2
dubs chops
Scooby Newbie
Member#: 500444
Join Date: Apr 2019

I have never heard of it causing any harm. I use it from time to time. I saw a video on youtube once of a can running directly off of it and the before and after seemed legit.
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Old 10-17-2019, 01:44 AM   #3
Scooby Newbie
Member#: 507241
Join Date: Oct 2019
Chapter/Region: NWIC
Location: PNW
2012 WRX STI
Plasma Blue Pearl


I sprayed a can in my intake and a can in my gas tank when i bought my '12 STi, it must have cleaned up alot of carbon in there from how much it was smoking. not sure how much it helped performance wise but it was peace of mind.
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Old 11-11-2019, 03:03 PM   #4
Scooby Newbie
Member#: 508177
Join Date: Nov 2019
Chapter/Region: South East
Location: Charlotte NC
2005 Impreza RS

Default worked for me

I have used Seafoam when bringing cars that had set for a long time back in to service - Found it get them running much smoother while working the old gas through the system and on my way to put new gas into the tank. Not sure I'd use it as PM given the 99 cent bottles deal well enough with a bit of H2O condensing in the tank and are cheap enough to add every 3 or 4 months.....
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Old 11-13-2019, 11:54 AM   #5
Scooby Newbie
Member#: 507873
Join Date: Oct 2019
Location: Vancouver

@Brimm51 that's not how it works, it makes any car smoke, you're basically burning oil directly in the cylinders. It literally says on the can and in any video you watch that it will smoke heavily and that's why you're supposed to drive kind of hard for a short time after using the intake spray.
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Old 11-20-2019, 04:16 AM   #6
Scooby Newbie
Member#: 508542
Join Date: Nov 2019

ive always put some in brake booster line and some in gas tank. sometimes oil right before change out.
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