[GMAs]

As to the subject of the oil temp... lets first look at how its is controlled... first it has a heater... yep the back sides of the pistons... so what you see on the temp guage is not necessarly what the real inside temp is... it is usually much higher... and that is where the moisture is driven out of the oil... in the forms of crank case exhausting...

Second we have the cooler... yep their is a device that causes the oil to cool off... its the oil cooler located on the engine... its job is to cool the oil... but....

we don't want big variations in oil temp so they put a cooler by pass on it ... sort of ....the thermostat in the oil line is like a cars is in line with the radiator.... execpt that this one doesn't block until it get warm... so it maintains the temp of the oil... till it starts getting too hot then the varitherm blocks off the bypass and the oil is routed thru the oil cooler... which then tries to bring it back down.... simple huh...


Now if your oil temp is truly runing cold... i.e you have checked the gauge and other parts and they are correct... then you need to go look at the varitherm... and make sure its not stuck closed... yep closed... they do that... and then the oil temp gets too cold.... all the time... not good for the engine.... as other parts are dependent on the temp being about right..... for constant expansion and cycling...

Check the oil temp... and then if off check the varitherm...

As to the props... you get a lot of gunk mixed with moisture in oil... and it really fills up the piston area in the prop...making the thing slugish and not work right... you may want to have them checked... its not too expensive and like insurance... better to have than not...

Good luck.. GMAs...