It would seem like extended low speed operation would be a normal 
situation - "No Wake Zone" until out in open water. Check with others. 
Could even go to a dealer, and say - I have an extended slow speed area 
where I go frequently, is that an issue. A hot engine can cause warping, 
and gasket issues. Also when the head is replaced on many engines, 
including the 1.9L Ford escort, it is required to replace the head 
bolts. If that head was pulled previously, they should have paper work 
to indicate they bought new bolts in addition to the gasket. There are 
just so many angles to this, it's hard to bring out everything on first 
or 2nd go around.

Vitaliy wrote:
> Carl Denk wrote:
>   
>> Does this unit have a sealed cooling system,
>> or circulate sea water?
>>     
>
> I believe it circulates the lake water, based on what I was told and also 
> because it's relatively common for the "oil hot" light to come on at low 
> speeds.
>
> Vitaliy
>
>   
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