Seafoam 2004 Pontiac Grand Prix GTP (supercharged)
Odometer reading at the time of this procedure was just over 88k.
On GM’s 3800 s/c V6 you DO NOT suck Seafoam through the brake boost vac hose. SF may damage the Teflon coated s/c rotors. Instead, discount the vacuum line directly beneath he s/c snout. Once you remove the tube/line you’ll see a metal fitting going into the engine. Just attach another tube to it so that you can have the running engine drink the SF.
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