Coolant and Oil

[Esser]

Next question, with the aluminum rad and a heater core, how much coolant will it take? 2 jugs enough?

[jiott]

One gallon jug is plenty of the premixed.

Still curious Steve, after a flight I still find I need to burp to get an oil fill reading.

[Slyfox]

mine has always shown full.

[jiott]

One further question Steve, with your Model IV high mounted oil tank what keeps all the oil from draining back to the sump the moment you shut off the engine?

[Slyfox]

I knew you were going to ask that. I have an oil thermostat that I got from lockwood years ago. I mounted it on top of my gear box. believe it. it keeps the oil in the tank. unless I don't fly for a couple weeks it stay up at the lower line pretty much all the time. have checked oil before flight which I still do a lot. not an old woman am I.

[jiott]

OK, interesting. Now we have "the rest of the story". Thanks for indulging my curiosity.

[Slyfox]

the rest of the story being, my oil level doesn't go down very much between flights, hay wait I fly a bunch.

[jiott]

I fly a bunch too and I used to put in about 1 cup between 50 hr oil changes. Then I had 15 minutes of overheating when I lost my old copper radiator; ever since then I never add any oil between changes. Guess I finally had a good engine break-in.