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Koots · 12-09-2015, 03:51 AM

I know this is an old topic, but Seafoam is best used when sucked up through intake manifold vacuum.

I like both MMO and Seafoam, both have given me positive results on my vehicles (small town, no highways, lots of idling in -40* and colder, etc.). I prefer MMO in the fuel tank (lubrication is nice) and seafoam through the intake vacuum (don't just pour it into an opening, let the engine suck it up)

12-09-2015, 03:51 AM	#28
Koots GX Member Join Date: Nov 2015 Location: Goose Bay, Labrador Posts: 40	I know this is an old topic, but Seafoam is best used when sucked up through intake manifold vacuum. I like both MMO and Seafoam, both have given me positive results on my vehicles (small town, no highways, lots of idling in -40* and colder, etc.). I prefer MMO in the fuel tank (lubrication is nice) and seafoam through the intake vacuum (don't just pour it into an opening, let the engine suck it up) __________________ 1999 Alero GL Sedan - 3400/4T45E -HP Tuners custom tune in the works -Hopefully much more in the works besides maintenance.