I just assembled a mahogany adirondack chair to be used outside on the deck.
I originally thought I would just use some Minwax Polyurethane that I
already have but according to the manufacturer's web page, "mahogany is a
dense wood and should not be treated with finish products meant for softer
woods". They recommend their own finishing product but don't list the
price. Would anyone care to comment on whether the Minwax Polyurethane
would work on mahogany or, if not, suggest another product from another
manufacturer that might be available locally (and probably cheaper)?

Thanks
John