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Thread: Oil temperature

  1. #1
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    Default Oil temperature

    Limited info on the search function but is 180 an acceptable oil temperature? I taped half the oil cooler and the oil temp reached 200 but the cylinder temp was pushing 215.

  2. #2
    Senior Member jiott's Avatar
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    Default Re: Oil temperature

    I don't see anything wrong with those temps.
    Jim Ott
    Portland, OR
    Kitfox SS7 flying
    Rotax 912ULS

  3. #3
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    Default Re: Oil temperature

    Jim,

    The 180 oil or the 215 cylinder? 220 is my indicated redline so I’m a little nervous taping as much of the cooler as I did to get the oil temp to 200.

  4. #4
    Senior Member Slyfox's Avatar
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    Default Re: Oil temperature

    you are from boise, no way that's a problem. leave it alone. I have a thermostat on my oil and I think it keeps it 180. I've flown over 2000 hrs with that and have never seen water in my oil. I'm just north of you a couple hundred miles. leave it and go fly.
    steve
    slyfox
    model IV 1200-flying
    912uls
    IVO medium in-flight
    RV7A-flying
    IO-360
    constant speed prop

  5. #5
    Senior Member PapuaPilot's Avatar
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    Default Re: Oil temperature

    The experts say 180 is the minimum temperature needed to remove water form your oil. The oil temp is actually getting hotter elsewhere in the engine, that is why 180 works. I would say 180-200 is ideal.
    Phil Nelson
    A&P-IA, Maintenance Instructor
    KF 5 Outback, Cont. IO-240
    Flying since 2016

  6. #6
    Russell320's Avatar
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    Default Re: Oil temperature

    Which engine do you have? The 912ULS CHT max is 275F. The 912UL CHT max is 300F. Oil temps between 190F and 230F are normal. The Rotax 912 operating manual is the source for those numbers.
    Russ
    Model IV Speedster
    912UL IVO IFA
    RV6A
    Needle, Ball and Airspeed
    Maybe a little GPS

  7. #7
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    Default Re: Oil temperature

    Sorry for the omission. It’s a 912ULS.

    Sounds good guys. I will leave it alone with the exception of possibly partially taping the oil cooler as needed this winter.

    Appreciate the input.

  8. #8

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    Crowell texas
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    Default Re: Oil temperature

    Just looked at thread thanks for info just bought a 7 with 912 and first time flew it like to have jumped threw my skin when I say temps rising so high. Have a lot to learn about engine. Been flying 4 with 582 1100egts. Not used to 1300s. And 213 oil temp.

  9. #9
    Super Moderator Av8r3400's Avatar
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    Default Re: Oil temperature

    For a 912, F120º oil temp is the MINIMUM takeoff temp. So 180º is just barely warmed up. I like to see at least 200º for normal operations.
    My old IV-1050 (912UL) didn't even have an oil cooler on it.
    Av8r3400
    Kitfox Model IV
    The Mangy Fox
    912UL 105hp Zipper
    YouTube Videos

  10. #10
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    Default Re: Oil temperature

    Just FYI the newer rotax912uls max cht is 248f If you run them to 275 you will be boiling your water. What’s confusing is your really reading max coolant temp sensor on the cylinder which most are calling CHT. Didn’t want someone to read the thread and get the two numbers confused. Make sure you know what cylinders you have and what temp your actually reading, coolant or true CHTs.
    Dustin Dickerson

    Building 7ss STI x 2
    Oratex
    29" shock monster
    EP912STI 155hp
    Garmin
    N33TF......FLYING!
    N53TF......FLYING!

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