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Old 03-24-2011, 05:57 PM   #7 (permalink)
EcoModding Lurker
Join Date: Jun 2010
Location: Northeast
Posts: 16

Clyde - '98 Honda Civic EX

Mickey - '90 Honda Civic Wagon rt4wd
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Zonker's on point here, and the Seafoam bottle itself states it's "not to be used on vehicles with over 150,000 miles."

However, it's not definitive. Here's a link I've bookmarked with compression tests before and after seafoaming a civic

Seafoam on high mileage engine - Compression results - Honda-Tech

at 198,000 miles, I'm hesitant too!
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