got a couple of questions i want to change my oil before winter and i was thinking of doin seafoam because it never had it done before it has 241 miles pretty soilid though and i want to go with mobil 1 oil ..... i heard if i put seafoam in the crank i ll have to drive it 100miles before i drain the oil to get it cleaned out ? also wondering if its safe but i think i should do it at high rpms i smell the engine seems dirty. anything else i should do . how much do i put in the crank case

There is a write up the the DIY section. Get 2 cans, that'll be enough to do a whole system clean out

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Why have more money than brains? Cuz RACE CAR :

I've always been leery of putting seafoam in the crankcase. I've used it in the vacuum line and gas tank with great results, but to me the only thing that should ever be in the block is oil and nothing else.
What type of oil have you been running in the car? Cleaning the engine up at this point might just cause oil leaks that would otherwise been sealed up.

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Dubs:00 VW GTI VR6, Low and Slow 91 VW GTI 8v, Shave the Bay!! 91 VW Cabriolet 8v, bitch Basket
GP's:04 GP GT, Past now G-Ma's Girlfriend's 97 GP GT, "Project Pink Power"

Seafoam in the oil will work to clean deposits, but so will high quality oil. I would recommend just running good oil and you shoudn't have any need to put the seafaom in the crankcase. If you do decide to mix it with the oil, don;t drive more than ~50 miles on it, the seafoam "cuts" the oil and causes it to sheer down to a lower weight (30 weight oil may start to behave more like a 20 weight or even less).

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'05 WRX STi - COBB Stage 2|Invidia DP|3" Borla XR-1|Coilovers|Camber Plates|Swaybars|Endlinks|Bushings|Braces|Anti Lift Kit|DBA4000s|SS lines|
Sold: 06 Cobalt SS/SC, 99 GTP 245WHP/326 Ft-lbs, 06 R6

Only put seafoam in the crank if you want to permanently lower your oil pressure.....

You'd be better running off running an oil with detergent in it than running seafoam in the crank. It's like fixing a radiator leak with an egg yolk... will it work? Sure, but it's not really recommended.

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Gt2256v, FMIC, Port & Polish Head, Stage 2 Colt Cam. Rosten Rods, PD150 Pistons, Oil Cooler, Fuel Cooler, Diablo W/M kit, Built 5 speed with LSD
I work on enough GP's to know I don't want to own one =P

only reason why it lowers oil pressure is becuase the oil can more more freely and you are now actualy see just how worn the engine realy is not becuase the seafoam damaged the engine.


i have used seafoam in the crank case did no harm to the merc and the oil pressure actualy went up on the guage (most of had a clog before the sensor) i only drove 10 miles to get the engine up to temp then changed it out it is the exact same process when you get and engine flush at a shop but there cleaner is a lot stronger then seafoam is

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92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater

thank you guys for the help , suppose i dont run seafoam in the crack what type of oil should i run then as a detergant type one to clean it cause if anything i can put seafoam in the gas tank and brakeboster 1 can in oil? and half of a can in brakebooster ? .. iv read the right up but sinice i have k's just trying to be safe even though i wanna do it to freshen it up a bit .thanks again though u guys are a great help !

I had a buddy over in lima work on a motor that had half a can added to a 5qt sump. The car was driven (drove?, w/e it's late don't care) 80 miles. The car started knocking, changed oil continued to drive until siezed.... Possibly the seafoam cleaned something out or it got to shear and the rod beaing spun which knocked which moved the thrust washed and ended up galling a crank bearing and siezing the motor.... catastrophic failure anyone?

O btw the car had 16 psi oil pressure before and 2psi after =P.

As for what oil to use. If you really think the motor is gummed up just run the regular Mobile 1 synthetic. You could run the highmileage stuff, but like planeboy said, you run the risk of pissing off seals and making the motor leak more. I think pouring it in your gas tank and then sucking a little in the vacuum line is adequate. Granted that only cleans the injectors and Intake valve, but it's better than nothing.

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Gt2256v, FMIC, Port & Polish Head, Stage 2 Colt Cam. Rosten Rods, PD150 Pistons, Oil Cooler, Fuel Cooler, Diablo W/M kit, Built 5 speed with LSD
I work on enough GP's to know I don't want to own one =P

ye i might just put some in the gas tank and vacuum line get atleast 40% of the shit out if anything. change the oil with mobil 1 heard alot of good reviews on it might give it a try ..thanks again to every one !

i would put that in user error. that is way to much seafoam and he drove the car way to long. it also depends on the milage before use.

he thinned the oil out too much. i never use more then a 1/4 can i belive the can even sais not to use more the 1/4

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92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater

suppose i put the seafoam in the crank about half can and i drive it for maybe approx 10 mins to the shop will it mess up ? also if i put it in the gas tank how much do u really think it will clean ? and i dont think i can run synthetic now i think i usally put regular in it :S not sure though .... also if i put it in the brake booster how much will that help it ? i kno some of u guys did it and know what happens i havent even touched that brake booster line lol

This. I don't think its necessary.

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2009 Pontiac G8 GT- Roto-Fab Intake, Roto-Fab Radiator cover, Superchips Cortex Tune, Tinted Tail lights, Corsa Cat-Back Exhaust, Tinted side markers, Painted GXP Diffuser, Tinted Reflectors, Painted Grilles.

even thought its gunna make the oil weight less im goin to drain it anyways with in like a matter of minitues in like 2 hours or maximum 3 that thing is gunna out and new oils in

don't use a half of can int he oil that will damage the engine. seafoam in not a lubracant

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92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater

less then a half :\ even if i drain it fast ?

1/4 can max

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92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater

I would say if your determined to put something in the crankcase add a bit of trans fluid( dextron III is fine.) It is a higher detergient but still has lubricating properties,

But what ever you do DON'T DRIVE IT VERY FAR before getting the oil back out or you could be replacing some parts, or the whole motor. The key is to Not overdo it.

sent from my driod x, via my fingers through tapatalk

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2001 white gt coupe with enough crap to make it run mid 13's with 3 bad pistons
2002 40th GTP sedan mostly stock

I personally wouldn't add it to the oil, I've recently done a sefoam treatment myself but only added through brake/vac hose and to fuel tank, thats where you will benefit the most.

done deal vac line and gas tank it is will do thanks to every one !

total miles on the car?
i will refuse seafoam in the crank or top end in my car as its 14 and 230k and still running strong
no need to make leaks

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that many miles you could loosen up carbon and realy kcuf it up by bending a valve on a catbon chunk

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92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater

^^^ my thoughts
i may have a leak now by using good oil

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wow ima need to damn careful lol hopfully i dont have a leak or anything im not gunna put it in the crank so w.e maybe some in brake booster and gas tank.

Why are you so convinced that using Seafoam is a good idea?

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2009 Pontiac G8 GT- Roto-Fab Intake, Roto-Fab Radiator cover, Superchips Cortex Tune, Tinted Tail lights, Corsa Cat-Back Exhaust, Tinted side markers, Painted GXP Diffuser, Tinted Reflectors, Painted Grilles.

well i did do it on my old gtp but it ended it's life alot early
i'd honestly only use it for injector cleaner

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