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    Oil temps too high?

    What's too high? What's normal operating temp?

    It's my 1981 GS750. I'm seeing an average of around 220*f. Hottest I've seen was 238*f while idling in traffic. Where should I get concerned?

    Temps are taken from the pressure plug on the filter cover.

    #2
    I wouldn't start to get concern until about 275 degrees F. Synthetic oil is a good hedge since it doesn't thin as much in heat and has better film strength so it stays on the metal parts.
    Ed

    To measure is to know.

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      #3
      I run Rotella T 15-40...I won't run full synth on an engine I didn't rebuild (also don't like running $10/qt oil).

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        #4
        Mac Im with Ed on this...Normal indicated running temp on my 1100 is 210, and while its been cool around here, even in the summer i never saw it run at that unless im sitting in traffic. HOWEVER i run a pretty big oil cooler on it, and my 750 would run above 210 pretty normally, never saw any ill effects.

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          #5
          My 700 has an oil temp gauge as standard equipment (who knows how accurate it is?), and for the past twenty-four years, "normal" temp on it has been right at 200 degrees. On a 100 degree August day riding across West Texas twenty years ago, it got up to and stayed at about 250-270 degrees for several hundred miles with no ill effects. In tight traffic on hot days it will get up to 240 or maybe a bit higher even, doesn't seem to hurt it.

          I have the fairly small stock oil cooler on it, and always run Rotella synthetic 5W-40 oil. It seems to work great and only costs about $18 a gallon at Wal-Mart.
          GS450E GS650E GS700ES GS1000E GS1000G GS1100G GS1100E
          KZ550A KZ700A GPZ750
          CB400T CB900F
          XJ750R

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            #6
            Awesome. I just didn't know if I should be worried. My Vapor allows me to set a warning and a critical oil temp light so this will give me a good idea of where to set them.

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              #7
              Worry less.

              Ride more.
              1983 GS850G, Cosmos Blue.
              2005 KLR685, Aztec Pink - Turd II.3, the ReReReTurdening
              2015 Yamaha FJ-09, Magma Red Power Corrupts...
              Eat more venison.

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              Celeriter equita, converteque saepe.

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