In general, a lower temp thermostat is used in raw water cooled
applications. Slows down the detrimental effects of sal****er. Higher temps
are used on fresh water cooled engines. As for Volvo?
Gordon
" JimH" jimhUNDERSCOREosudad@yahooDOTcom wrote in message
. ..
My Seloc repair manual for my 1997 Volvo Penta 4.3L with and SX outdrive
says the engine takes a 160F thermostat. That is what I installed in
spring.

The mechanic who worked on my boat after the overheating incident says it
takes a 140F thermostat and that is what he installed.

Does anyone know the correct thermostat temperature rating for this
engine?

Will running the wrong thermostat temp have a negative effect on the
engine's performance?

TIA!