New Fuel Tanks Resist Effects of Ethanol-Blended Fuels


To address the effects of ethanol-blended fuel in fibreglass fuel tanks, Moeller Marine Products and Scepter Corp, Scarborough, ON, offer the 031626 White Topside Tank. The fuel tank was initially designed to replace the fibreglass tanks for the Boston Whaler 150 and 170 Montuak models, however it can also accommodate a variety of other center consoles currently on the market.

David Jones of the marine products group for Scepter comments,  “Ethanol blends in fuel are certainly becoming more prevalent within the North American marketplace. One of the major drawbacks is that ethanol fuels are considered aggressive and have been shown to attack fibreglass fuel tanks.”

Introduced at MAATS in Orlando, FL, the White Topside Tank is a direct, slide-in replacement auxiliary tank and is constructed of high-density polyethylene with a UV-stabilized resin, which is designed to withstand the effects of ethanol-blended fuels can have on fibreglass tanks, said the company.

“Over time ethanol can dissolve the structure and turn the interior of older fibreglass tanks to a jelly-like consistency, which not only ruins the structural integrity of the tank, but plugs fuel systems,” said Jones. “The new blended fuels are also known to attack gaskets or other sealing surfaces that have not been designed to withstand the chemical actions set up in these fuels.”

With a 24-gallon capacity, the White Topside Tank also features a molded fill neck with side angle orientation for ease of access and Moeller's PL3 pickup design with a 360-degree swivel. The tank also houses a Kelch fuel cap with a sight gauge and vent.

“More and more, we are seeing even the smaller boat builders moving from aluminum and stainless steel tanks in favor of the cross-linked polyethylene permanent, below deck fuel tanks to avoid electrolysis issues that occur when using ethanol and other blended fuels,” said Jones.