Oil Temp gauge sender placement
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Oil Temp gauge sender placement
Where do I put the sender for an oil temp gauge? What oil temp should I be seeing? Before or after cooler. There is some ports in the remote oil filter base and I could disconnect the hoses and find out which is which.
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Re: Oil Temp gauge sender placement
The oil filter adapter is about the easiest place to locate a sending unit. It measures the oil temp right out of the motor so it is going to be within a degree or two of the temp of the oil in the pan. Oil temps should be at least 210* at cruise to boil off moisture in the oil and no more than 250* max after a long WOT run. I don't like to see anything over 240* myself.
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Re: Oil Temp gauge sender placement
Originally Posted by MACDAD260
The oil filter adapter is about the easiest place to locate a sending unit. It measures the oil temp right out of the motor.
Bryan
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Re: Oil Temp gauge sender placement
The center hole in the oil filter pad is the return to the engine so it sounds logical that your system is set up so the oil goes through the cooler first, then the filter and then back to the engine. That is bass-ackwards from my set up. My oil comes out of the off-center hole in the adapter on the block, to the remote filter, then to the cooler and then back to the center hole of the block adapter. I am getting hot oil to the filter and to the oil temp sending unit. That is the way the stock system was setup on the engine, too. I know that Merc does some odd things but, apparently things that work. I was always told that to make the oil cooling system work efficiently you needed to avoid 90* bends if possible and to use at least 5/8" lines and fittings. Recently however, I have seen an HP575SCi and a HP525 on the floor at a marine repair shop and noticed that the oil cooler lines are 1/2" and ALL the fittings are 90*.