114 M8 Normal Oil Temperature Range?

lingone

30+ Posts
Apr 29, 2022
40
32
Veuxhaulles sur Aube, France
Name
Colin
The simple question is : What is the 'normal' range of oil temperatures for a 114 M8 air/oil cooled engine? (2022 Freewheeler if it makes any difference).

Now the background:
I went for a ride when the air temperature was 66°F. When I returned the dip stick oil gauge showed 182°F, but the oil cooler was not even warm.
I looked at the dip stick oil gauge instructions, and they showed below 159°F as considered 'cold', and above 160°F as warm/not cold. The instructions also showed that the gauge measured up to 310°F, when it would shut down at 310°F to save the electrics of the gauge.
What is the 'normal' oil temperature range for a 114 M8 engine, and at what temperature would the oil cooler kick in to assist with cooling the oil? I have looked at the service manual, but I could not find the answer to the two questions.
 
How long did you ride for?
I will see 200 to 210 after long rides (1 hr plus) in 70 deg ambient. Highest I see is 225 after a long ride on a really hot (85 to 90) day. This is on a 2020 FLRT with a cam, pv tune, and de-catted header pipe.
 
Thank you for that feedback. I had been out for an hour and a half in 68°F, so looking at my temperature of 182°F, it looks quite cool.
Having looked at the appropriate M8 HD service manual more closely, it says 'normal operating temperature 230°F' for the oil.
However, I would still be interested to know at what temperature the oil cooler starts circulating.
 
I don't think there is a thermostat and bypass, I think it circulates through the cooler all the time. The cooler fan does switch on at a particular temperature. Your temps are fine.
 

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