Seafoam question

CheyenneMustang · July 31st, 2011, 04:29 PM

I know most of you let out a hell of a sigh when you saw this but I've got a question and I'm not finding the answer. When should you add the seafoam to the crank case? Before or after funneling it into the pcv lines and revving?

mp4 player · July 31st, 2011, 05:57 PM

I don't think it really matters, you drive it with seafoam in there for ~100 miles anyways.

I've always done after though.

dgt_mustang · July 31st, 2011, 07:41 PM

^ correct, it really does not matter, its will take a few runs through everything before it will start to get rid of sludge and all that, they say not to drive around with seafoam in the crankcase though, i have heard not to go over 500 miles with it in their, but i put it in one time and didnt change the oil for AWHILE, had no problems so idk.

mustangs4life · November 29th, 2011, 10:43 PM

Hey guys, sorry to bring up an old thread but didn't wanna start a new one. So my question is, I have seen people say its ok to let the sea foam sit in the crank case for a while, and some say not to because it does internal damage. I am not planning on letting it sit in there long but would like 3-4 days be ok? I just want some advice to make sure I don't f up my engine :p

6ER THEN I 8ER! · November 29th, 2011, 11:24 PM

i wouldn't leave it in there for a long period of time....unless you feel like replacing your probly already worn out oil pan gasket.

mustangs4life · November 30th, 2011, 12:07 AM

Originally Posted by 6ER THEN I 8ER!

i wouldn't leave it in there for a long period of time....unless you feel like replacing your probly already worn out oil pan gasket.

What do you consider a long period of time in this instance?

6ER THEN I 8ER! · November 30th, 2011, 01:18 AM

Originally Posted by mustangs4life

What do you consider a long period of time in this instance?

a day or two of average driving shouldn't cause any issues unless your oil pan gasket already needs to be replaced

dgt_mustang · November 30th, 2011, 08:41 AM

I did put seafoam in my crankcase one time and did an oil change like 5 months later (half-synthetic) i had no issues, then again i dont do it all the time either.

xtreme 2 · November 30th, 2011, 09:00 AM

General rule is pour 1/3 of bottle in fuel tank, 1/3 of bottle in oil, and suck the rest up in the PCV, run the car for a minute to heat it up, shut it off. let it sit for 30, then fire it up and watch the smoke show.

Once the smoke dies down, drive it around until the smoke stops. Come back. Drive it around 100 miles (2 days of work for me) then change your oil.

From what I hear it neutralizes after that, but it WILL ruin your gaskets if they are already weak.

July 31st, 2011, 05:57 PM	#2
mp4 player Hardcore Enthusiast '00 V6 Procharged Mustang Join Date: Feb 2008 Location: WA Posts: 1,345 iTrader: 1 reviews	I don't think it really matters, you drive it with seafoam in there for ~100 miles anyways. I've always done after though. __________________ 2000 Prochaged V6. T-lok, Mach 1 takeoff exhaust with H-pipe, 20% tint, OEM fogs and all HIDs. SAE Corrected: 289HP/298TQ at 5100RPM(Pegged MAF).

November 30th, 2011, 09:00 AM	#9
xtreme 2 Hardcore Enthusiast 2001 v6 premium Join Date: Nov 2008 Location: Tulsa, OK Posts: 1,340 Blog Entries: 1 iTrader: 0 reviews	General rule is pour 1/3 of bottle in fuel tank, 1/3 of bottle in oil, and suck the rest up in the PCV, run the car for a minute to heat it up, shut it off. let it sit for 30, then fire it up and watch the smoke show. Once the smoke dies down, drive it around until the smoke stops. Come back. Drive it around 100 miles (2 days of work for me) then change your oil. From what I hear it neutralizes after that, but it WILL ruin your gaskets if they are already weak. __________________ Screw it, coming to play with the big boys... 5.4L Vortech COMING SOON!

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November 29th, 2011, 10:43 PM	#4
mustangs4life Regular 1998 mustang V6 Join Date: Nov 2010 Location: Iowa Posts: 141 iTrader: 1 reviews	Hey guys, sorry to bring up an old thread but didn't wanna start a new one. So my question is, I have seen people say its ok to let the sea foam sit in the crank case for a while, and some say not to because it does internal damage. I am not planning on letting it sit in there long but would like 3-4 days be ok? I just want some advice to make sure I don't f up my engine :p

November 29th, 2011, 11:24 PM	#5
6ER THEN I 8ER! Banned Join Date: Apr 2007 Location: Portland, TN Posts: 17,515 iTrader: 3 reviews	i wouldn't leave it in there for a long period of time....unless you feel like replacing your probly already worn out oil pan gasket.

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