I would worry about the underlying reason that would cause seals to fail after two years.....such as a rouch sealing surface or shaft movement due to excessive bearing clearances.....I give you 99.99% odds that it will fail within 2 more years...possibly even withing a year.

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Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
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Section 609 MVAC Certified
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"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche