How to Seafoam an Eighth Gen F150 (1987-1991)
09-08-2011, 09:46 PM
#41
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i didnt see anyone making sure people arent pouring it into thier brake booster.......just to let the noobs know, do not get it in the brake booster. what i have always done is put a third of a can into anothe container, such as the bottom half of an empty beer can, and let the engine vacuum just suck it out. then let sit...
but i have also heard on some forums that after a seafoam treatment, some old seals or ones on higher mileage engines caused leaks........i am hesitant to do this to my newest truck because it has 350,000 miles.i also dont put any in the oil unless i am going to change it within a few days.
i have had good luck with seafoams trans tune, cleans out automatics very well, just make sure you change fluid and filter soon after. im not gonna do it to this one because of the high miles and i know the p.o. never changed it, so e4od till it dies, then maybe a c6 swap.....
but i have also heard on some forums that after a seafoam treatment, some old seals or ones on higher mileage engines caused leaks........i am hesitant to do this to my newest truck because it has 350,000 miles.i also dont put any in the oil unless i am going to change it within a few days.
i have had good luck with seafoams trans tune, cleans out automatics very well, just make sure you change fluid and filter soon after. im not gonna do it to this one because of the high miles and i know the p.o. never changed it, so e4od till it dies, then maybe a c6 swap.....
09-12-2011, 04:46 PM
#43
Seafoamed the 1990 V8 yesterday, and saw the smoke as described!
Just FYI, Advance has Seafoam on sale for $6.99 right now. And here is a link to some coupon codes for additional $ off...
http://www.coupons.com/coupon-codes/...0911_BB_Exdeal
Just FYI, Advance has Seafoam on sale for $6.99 right now. And here is a link to some coupon codes for additional $ off...
http://www.coupons.com/coupon-codes/...0911_BB_Exdeal
10-06-2011, 04:50 PM
#44
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I saw that some people were commenting on the white smoke. Its white and not black because the engine is burning off the seafoam more than it is burning off carbon. Some off the old hot rod guys back in the day used to mist water down the carb to clean everything out. You could even put some seafoam in a spray bottle and spray down the TB. That would be good for a quick clean up job here and there.
12-17-2011, 11:19 PM
#47
Big Rig Driver
same procedure for anything except diesels, and the brake booster is just one spot to pour it in. Some people have used the pcv valve, I've done it right at the throttle body. Same principle everytime.
Another note to you guys that I know of is that when you pour it into your crankcase where your oil goes this is how it plays out for time before the oil change.
Run the truck for 60kms or 50miles if your truck is over 250thousand kms or the oil is overdue.
Run the truck up to 250kms if the truck is under 200thousand kms or the oil is at the interval for the change.
Now your probably looking at those number goin well I'm at 225thousand kms and just changed the oil. I'd say use your judgement and do the seafoam in 150ish kms.
Seafoam is a safe product but remember it does thin out your oil and breaks down carbon
Anyone with a diesel should not be using it in the crankcase unless your bypassing the oil that goes through the turbo... or you like rebuilding it. I've heard it can become an issue for the bearings.
Another note to you guys that I know of is that when you pour it into your crankcase where your oil goes this is how it plays out for time before the oil change.
Run the truck for 60kms or 50miles if your truck is over 250thousand kms or the oil is overdue.
Run the truck up to 250kms if the truck is under 200thousand kms or the oil is at the interval for the change.
Now your probably looking at those number goin well I'm at 225thousand kms and just changed the oil. I'd say use your judgement and do the seafoam in 150ish kms.
Seafoam is a safe product but remember it does thin out your oil and breaks down carbon
Anyone with a diesel should not be using it in the crankcase unless your bypassing the oil that goes through the turbo... or you like rebuilding it. I've heard it can become an issue for the bearings.
12-18-2011, 04:08 PM
#48
same procedure for anything except diesels, and the brake booster is just one spot to pour it in. Some people have used the pcv valve, I've done it right at the throttle body. Same principle everytime.
Another note to you guys that I know of is that when you pour it into your crankcase where your oil goes this is how it plays out for time before the oil change.
Run the truck for 60kms or 50miles if your truck is over 250thousand kms or the oil is overdue.
Run the truck up to 250kms if the truck is under 200thousand kms or the oil is at the interval for the change.
Now your probably looking at those number goin well I'm at 225thousand kms and just changed the oil. I'd say use your judgement and do the seafoam in 150ish kms.
Seafoam is a safe product but remember it does thin out your oil and breaks down carbon
Anyone with a diesel should not be using it in the crankcase unless your bypassing the oil that goes through the turbo... or you like rebuilding it. I've heard it can become an issue for the bearings.
Another note to you guys that I know of is that when you pour it into your crankcase where your oil goes this is how it plays out for time before the oil change.
Run the truck for 60kms or 50miles if your truck is over 250thousand kms or the oil is overdue.
Run the truck up to 250kms if the truck is under 200thousand kms or the oil is at the interval for the change.
Now your probably looking at those number goin well I'm at 225thousand kms and just changed the oil. I'd say use your judgement and do the seafoam in 150ish kms.
Seafoam is a safe product but remember it does thin out your oil and breaks down carbon
Anyone with a diesel should not be using it in the crankcase unless your bypassing the oil that goes through the turbo... or you like rebuilding it. I've heard it can become an issue for the bearings.
Note: The above author takes no libility in his claims or statements of how to use the product. Fact. Put it in your gas tank and run it thru just like Gumout or other products. You will suffer much lest higher odds of internal engine damage. Some manufactures ( Toyota will void your Warranty if you let them know you do this. They say right in the manual not to use engine additives. It's your head gasket cyl wall that's at stake with pure dumps into the intake parts of your engine. Do you want an instant oil burner ? 
Take it out on a nice windy hilly road and run it harder in a lower gear to heat up and blow the cobs out with a gas additive to clean the parts and remove the water/ice from it. Change your filter also.
Last edited by papa tiger; 12-18-2011 at 08:17 PM.
12-18-2011, 07:57 PM
#49
Big Rig Driver
02-12-2012, 12:27 PM
#50
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On the tranny fluid....An old school welder taught me that trick...mix the seafoam 50/50 with tranny fluid in a separate container and the draw it into the engine using a vacumn line and throttle up the truck until the mix is all gone. Did that to my GF's 225 slant six dodge a long time ago...I had to pull the intake to replace a gasket a couple weeks later and the intake runners looked like brand new cast aluminum. Just FYI 