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Old 11-08-2010, 09:29 AM   #9
City: Carefree, Arizona
Country: usa
Vessel Name: sunchaser V
Vessel Model: DeFever 48
Join Date: Apr 2008
Posts: 7,474
Water in an aluminum feul tank

As said, standard steel if properly installed will last for a long time in diesel boat applications. It certainly does in above ground applications for earth moving* equipment (I've worked with Cat equipment built in the 50s whose tanks were OK)**and for over the road trucks.

This summer I heard something interesting from a big boat engineer who*is associated with the PNWs big yacht "engineer's organization." He says there is mounting concern that some Al alloys or welding rod are not holding up with the newer diesel fuels. The culprit could be some bio diesel manufacturing processes, ditto the lower S fuels or over the counter additives that are filling Walmart's shelves. Fact or fiction I don't know but I am aware of a large yacht*with 25 year old Al tanks which have recently started leaking.

-- Edited by sunchaser on Monday 8th of November 2010 10:33:47 AM
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