Need Help with water spots

[rock2033]

Mercury 300xs s/n 1e05229

I wasn't sure where to post this but I just bought this motor and it has some hard water spots and buildup on it that will not come off.
I have tried toilet cleaner, CLR, Windex, and anything else I have around the house. CLR made little clean spots (like water spots) but that's the only thing that has done anything. It's thick and baked on.

suggestions?

[jerzia]

Best I've ever used! http://www.purkleensolutions.com/products.html

[kls2020]

if you use plain old "Pledge" spray on furniture polish on your motor cowl every trip water spots will be unable to form and it keeps your motor looking new .

[ThomasD]

With the motor dry spray on some Lime-A-Way, quick wipe down, then rinse off.

[EuropeanAM]

White Vinegar will usually remove them- and Mercury's Detailing spray works quite nicely between wax applications.

While you're cleaning/polishing, watch for the missing digit in the serial number.

[rock2033]

With the motor dry spray on some Lime-A-Way, quick wipe down, then rinse off.

Tried that

[Bryanmc57]

Plexiglass polish