how to read oil temp gauge
#22
I had posted the same question here some time ago. So to further muddy the water, if you look at the picture below you will see 5 LONG hash marks that correspond (I've been told) to the 5 numbers on the oil temp gauge. To say that 4 dots represent the 5 numbers doesn't make much sense. Iclick responded to my question, and his reply is posted below. Using both a digital IR and an analog meat thermometer backed up this claim. Just my two cents.
I've also posted a pic of the Medallion Premium Bagger gauges. They list at $795.99 for the set. Nice.
"I agree. Some time ago I checked the oil temp with two other gauges when the gauge was at the dot below 230°, which I always assumed to be 205°. Both the digital IR and analog meat thermometers were within a few degrees of this. Since my bike never exceeds 230°, and that only rarely in heavy summer traffic, I don't worry about the graduations above that point."
I've also posted a pic of the Medallion Premium Bagger gauges. They list at $795.99 for the set. Nice.
"I agree. Some time ago I checked the oil temp with two other gauges when the gauge was at the dot below 230°, which I always assumed to be 205°. Both the digital IR and analog meat thermometers were within a few degrees of this. Since my bike never exceeds 230°, and that only rarely in heavy summer traffic, I don't worry about the graduations above that point."
Last edited by djkolp; 05-26-2011 at 05:49 PM.
#24
I finally installed the silver face HD oil temp gauge, road around for about 2 hours and the needle seemed to stay around 230 (12 o'clock) so I figure that is my bike's normal operating temperature. I removed the dipstick and used a digital meat thermometer that I had calibrated with boiling water. I put it in as far as I could making sure it was touching nothing but oil. With the oil temp gauge needle at 12:01, the digital meat thermometer read 236°F. I'd call that accurate.
#25
#26
#27
Thought I'd throw this in just to muddy the water even more. The temp you are monitoring is the temperature of the oil in the sump, (crankcase) after it has gone through the engine to lubricate and take away excess heat. The temp of the oil in the engine has is first pumped through the filter and cooler (if you have one) and is now cooler as it makes it's way to lubricate and help cool the engine. All fooling aside the gauge scale is nothing more than a quick reference. Which mark is 110 and which mark is 350 on the gauge? I would suggest you get used to where the mark is when riding under normal circumstances and if you notice it climbing you will have to decide whether this is normal due to present conditions or an actual problem. There are many opinions about what operating temps are safe, but, "according to H-D the oil is designed to operate at upto 300 degrees F".
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