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How do we properly seafoam our beloved GN's?

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jretrodude

Member
Joined
Dec 30, 2002
Messages
881
Is it ok just to add the whole can to the fuel tank, or do you have to put a 1/3 rd in the oil, and the brake booster, EGR valve vaccumm line? Want to seafoam it before it hibernates this winter?
 
Also it shouldn't hurt my wideband o2 or my stock o2 correct?

Also it shouldn't hurt my wideband o2 or my stock o2 correct? I still have the powermaster brake unit so no vaccum hose for the brakes. I did see on youtube a guy with a WRX put it in his EGR vaccum hose only a 1/3rd and a 1/3rd in the oil?
 
if it's just for storage, don't bother. just park it, unhook the battery, and don't start it until it's time to take it out of hibernation.
 
Keep in mind that when adding seafoam to a running engine it is a great way to check for header cracks or leaks. If your car has leaks you will be able to see the smoke puffing out of the cracks!
 
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