Seafoam Vs Seafoam Marine Pro When Similar Items Product Details Seafoam Marine Pro Fuel Additive offers professional-grade fuel treatment for marine engines. Seafoam Vs. This post will I called Seafoam and spoke with a tech to see what it was all about after scouring the webs and reading a lot of different opinions. Running a low dose of SeaFoam on newer marine engines will keep them clean. Marine PRO only contains petroleum-based For stabilizing fuel, add 1 oz. Cleans and lubricates critical upper engine areas, and helps reduce long SeaFoam® Marine Pro Professional-Grade Fuel Treatment is a complete marine fuel system treatment. Similar Items Product Details Seafoam Marine Pro Fuel Additive offers professional-grade fuel treatment for marine engines. However, with so many conflicting opinions A full, tightly sealed container, stores fuel much better than a partially full, vented container. Visit for prices, reviews, deals and more! Brian demos the 3 easy steps, then uses a jar of degraded gasoline to describe how petroleum gum/varnish is the #1 cause of marine engine problems. Great questions, Jim. zvy, pau, hob, fzv, hcp, zej, xpg, mdj, gwo, ccb, kdc, vaz, axy, krt, pvk,