2006 DYNA OIL COOLER
I have jpegs, just too lazy to post it - email me and I'll send them to someone who can do it.
I incorrectly answered an email from someone who emailed me directly.
I just don't get how oil can run "too cool". Please explain.
One of the important properties of oil is viscosity, which is like a measurement of the thickness or stickyness of the oil. As the temperature of the oil increases the viscosity decreases (it is said to be inversely proportional) so as it gets hotter it gets runnier. As an example Caltex Revtex Super 4T (10W-40) has a viscosity of;
90 mm2/s at 40'C,
11 mm2/s at 100'C
So from the above you can see that it gets a lot runnier at 100'C.
Oils also have a pour point which is a temperature below which they become so viscous that they effectively cease to 'pour' like a liquid. In the above case, that is -33'C.
I just don't get how oil can run "too cool". Please explain.
One of the important properties of oil is viscosity, which is like a measurement of the thickness or stickyness of the oil. As the temperature of the oil increases the viscosity decreases (it is said to be inversely proportional) so as it gets hotter it gets runnier. As an example Caltex Revtex Super 4T (10W-40) has a viscosity of;
90 mm2/s at 40'C,
11 mm2/s at 100'C
So from the above you can see that it gets a lot runnier at 100'C.
Oils also have a pour point which is a temperature below which they become so viscous that they effectively cease to 'pour' like a liquid. In the above case, that is -33'C.
I just don't get how oil can run "too cool". Please explain.
One of the important properties of oil is viscosity, which is like a measurement of the thickness or stickyness of the oil. As the temperature of the oil increases the viscosity decreases (it is said to be inversely proportional) so as it gets hotter it gets runnier. As an example Caltex Revtex Super 4T (10W-40) has a viscosity of;
90 mm2/s at 40'C,
11 mm2/s at 100'C
So from the above you can see that it gets a lot runnier at 100'C.
Oils also have a pour point which is a temperature below which they become so viscous that they effectively cease to 'pour' like a liquid. In the above case, that is -33'C.
I would think that the longer the oil stayed in place (less viscous) to a certian point the better it would be.
I wrote to Redline Oils and pointed them to this thread and asked them some questions. I hope they jump on the chance to explain oil to 20k users.
Theres a good cheap way to keep your Dyna cool in traffic, split lanes.
The Best of Harley-Davidson for Lifelong Riders
Farkin A. There's gonna be some long hot days on those dead straigh highways for ya.
That sounds like an awesome ride man. How many K's you expecting to do ? That's gotta be at least 15-20 thousand right ?
Are you stopping by Canberra ?



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