Good PM for both the Power Poles and jack plate ( mine is a Bob's) every couple years. Cheap insurance that your pumps keep running smoothly and seals stay sound. The "green" PP fluid is plant/seed based and after a couple years it starts developing clumps of goo in the tank.
I have two quarts of the PP fluid available (enough for two poles) if any of the locals need it. Not shipping it. $26.00 for both. Takes less than a quart to change out the reservoir fluid and purge the lines to the poles.