"Dennis Gibbons" wrote in message et...
How about routing the FRESH water through the existing oil cooler rather
than raw sea water? The heat exchanger should bring the temperature down
enough to protect you and you eliminate the corrosion risk.

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I wish to tank you all, for the good advises; In summary, I agree
that:

1) The elimination of the oil cooler is not a good idea
2) The more frequent change in oil lub would benefit the turbine
anyway
3) The best solution is to procure someone wich can make a similar
oil cooler but at amore razonable cost, say about US200.00
4) This new custom made oil cooler should have best materials and/or
sacrificial zinc anodes
5) If possible,the new assemble should have an option, so that the oil
cooler could be bypassed in an emergency situation.
6) The idea of using fresh water instead raw water in the oil cooler
could be anayzed as well

Best regards

Pascal Goncalves
s/v Navstar
Salvador-Bahia-Brazil