Too drain or not too drain

[beckmanrussell]

I have a 2002 Glastron 205GX with a 5.0GL Volvo Penta with the SX drive. My question is, is it better to drain the block and manifolds after each use? The drain/flush set up on my boat makes this very easy to do. Takes about 5 min for the whole thing....

 

[MFG197]

Re: Too drain or not too drain

seems like a science/chemistry thing. does metal rust faster when damp or immersed in water? i would say if it is salt water for sure flush.

 

[KaGee]

Re: Too drain or not too drain

Hello Senior, Welcome to Iboats.<br /><br />It's up to you if you are in fresh water. <br />If you are in Salt water, then flushing is a must if you want to keep your manifolds in tact.

 

[beckmanrussell]

Re: Too drain or not too drain

I think I need to clairify. I always flush the engine when I get back. Is it better to drain it all like winterizing or let it set.

 

[KaGee]

Re: Too drain or not too drain

My opinion is, if you use the boat often, that's a lot of trouble to go through, and to be honest, I doubt you alter the corrosion much if at all. Iron rusts in or out of water. <br /><br />If you are really concerned about prolonging the life of your block, go buy an aftermarket closed cooling setup.

 

[Olds Eddie]

Re: Too drain or not too drain

I have a closed cooling system but I always drain the risers. If the riser gaskets fail water will get into the engine. On a raw water system I would think it would be best to leave water in the block to slow the oxidation process.