Mercruiser Alpha-1 trim tab anode (Flat) installation question

[ktbarrentine]

Based on a previous thread (http://forums.iboats.com/showthread.php?t=557939) about trim tabs, and since I have power steering on my boat, I am switching out my outdrive trim tab anode for a flat version. The two that I have found indicate they are 1. zinc alloy, for saltwater only, and 2. aluminum, with a sticker on it that says "Highly active - salt and brackish water only". I run my boat strictly in freshwater lakes, so I see no issue with using either one of these flat anodes. Any one see any issues with this? (the aluminum one is cheaper of the two, so I am leaning towards that one.)
Also, the flat plate anodes are through-hole drilled, so I will need to use a nut with it. Stainless? (I assume).
Thanks!

 

[Thalasso]

Re: Mercruiser Alpha-1 trim tab anode (Flat) installation question

Based on a previous thread (http://forums.iboats.com/showthread.php?t=557939) about trim tabs, and since I have power steering on my boat, I am switching out my outdrive trim tab anode for a flat version. The two that I have found indicate they are 1. zinc alloy, for saltwater only, and 2. aluminum, with a sticker on it that says "Highly active - salt and brackish water only". I run my boat strictly in freshwater lakes, so I see no issue with using either one of these flat anodes. Any one see any issues with this? (the aluminum one is cheaper of the two, so I am leaning towards that one.)
Also, the flat plate anodes are through-hole drilled, so I will need to use a nut with it. Stainless? (I assume).

.
Thanks!

If you are boating in fresh water you need to be using [B]Magnesium[/B] anodes.

 

[oldjeep]

Re: Mercruiser Alpha-1 trim tab anode (Flat) installation question

And they are not drilled through, they are threaded the same way the finned tabs are.
http://www.iboats.com/Anode-for-Mer...6582447--session_id.970519719--view_id.172169

 

[ktbarrentine]

Re: Mercruiser Alpha-1 trim tab anode (Flat) installation question

Another mystery quickly solved through the forum. Thanks!

Found the magnesium anode right here on iboats. fair price, good shipping. I'm satisfied already.

(curious, though....whats the issues, if any, are there by running a zinc or aluminum anode in freshwater?)