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Allch Chcar · 03-23-2011, 08:12 PM

My only knowledge of seafoam is that it is recommended you change the oil within 500 miles if you do use it in the crankcase. And quite possibly the sparkplugs if you use it in the fuel tank. It's not supposed to stay in the oil, it's to clean out any buildup so changing the oil only seems logical. The sparkplugs could be a concern if it starts missing after you use it in the fuel tank, it could foul the plugs.

03-23-2011, 08:12 PM	#2 (permalink)
Allch Chcar EtOH Join Date: Jan 2008 Location: North Coast, California Posts: 429 Cordelia - '15 Mazda Mazda3 i Sport 90 day: 37.83 mpg (US) Thanks: 72 Thanked 35 Times in 26 Posts	My only knowledge of seafoam is that it is recommended you change the oil within 500 miles if you do use it in the crankcase. And quite possibly the sparkplugs if you use it in the fuel tank. It's not supposed to stay in the oil, it's to clean out any buildup so changing the oil only seems logical. The sparkplugs could be a concern if it starts missing after you use it in the fuel tank, it could foul the plugs. __________________ -Allch Chcar