How much per dot?
Outstanding HDF Member
Joined: Nov 2012
Posts: 2,422
Likes: 14
From: Fla
As has been throughout time...
All vehicles have a low line/mark, and a full line/mark. The low level mark has almost always been 1 quart less than the full mark, (except when using metric or other value types). You did the math, so as long as your batteries are up on your calculator, and you didn't choose the incorrect function because you set the calculator in Scientific mode to impress your friends, then the amount you calculated for the individual marks between low and full on your dip stick should be correct. Of course, this is assuming all other variables, like internal parts mass and shape of the tank, are of no consequence...
Also note that since the internal combustion engine was introduced to propel on and off road vehicles, oil consumption has been judged by 'quart(s) per mile(s)'. Hopefully 'quart(s) per thousand(s) of miles' or better.
Using smaller amounts of either miles, or fractions of a quart, entered into a mathematical equation may be less accurate to a very high degree. Which may then require additional imposed constant(s) to be forced into the mathematical equation to attain the accuracy desired by the mathematician...
All vehicles have a low line/mark, and a full line/mark. The low level mark has almost always been 1 quart less than the full mark, (except when using metric or other value types). You did the math, so as long as your batteries are up on your calculator, and you didn't choose the incorrect function because you set the calculator in Scientific mode to impress your friends, then the amount you calculated for the individual marks between low and full on your dip stick should be correct. Of course, this is assuming all other variables, like internal parts mass and shape of the tank, are of no consequence...
Also note that since the internal combustion engine was introduced to propel on and off road vehicles, oil consumption has been judged by 'quart(s) per mile(s)'. Hopefully 'quart(s) per thousand(s) of miles' or better.
Using smaller amounts of either miles, or fractions of a quart, entered into a mathematical equation may be less accurate to a very high degree. Which may then require additional imposed constant(s) to be forced into the mathematical equation to attain the accuracy desired by the mathematician...
Last edited by Def Mute; Jun 16, 2013 at 06:13 PM.
Ultimate HDF Member
Joined: Jan 2009
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From: East Tn Foot of The Dragon
OK here we go.
So on the oil dipstick for a 103 engine you see the little dots that indicate oil level.
So the question is, how much oil does each dot represent?
On my dipstick I see aprox 20 dots from add qt mark to full mark.
Now beings that a quart = 32 oz it would seem that each dot would represent 1.6 oz. Does this sound reasonable? Does anybody know the"official Harley answer"?
The reason I am needing to know this is I want to check to see how much oil consumption my engine has with out having to add oil to bring it back to the full mark.
OK I know, I have thick skin, so let the flaming begin, but hopefully someone will be able to give accurate info.
So on the oil dipstick for a 103 engine you see the little dots that indicate oil level.
So the question is, how much oil does each dot represent?
On my dipstick I see aprox 20 dots from add qt mark to full mark.
Now beings that a quart = 32 oz it would seem that each dot would represent 1.6 oz. Does this sound reasonable? Does anybody know the"official Harley answer"?
The reason I am needing to know this is I want to check to see how much oil consumption my engine has with out having to add oil to bring it back to the full mark.
OK I know, I have thick skin, so let the flaming begin, but hopefully someone will be able to give accurate info.
Outstanding HDF Member
Joined: Nov 2012
Posts: 2,422
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From: Fla
If the quart measurement lines were half an inch apart, and there were 20 marks between, each mark would be 1/40th of an inch. If the quart marks were 1/4" apart, and again with 20 marks between, each mark would then have a value of 1/80th of an inch. Now, if the quart marks were 5/8" apart, then the corresponding 20 dots between would in fact be 1/32nd of an inch apart. Exactly how did you measure the OP's 'dip stick'?
When doing mathematical functions, you must be aware to use similar items. You cannot judge half a water melon as being the same as half an orange...
To wit, you cannot say a line measured to equal one quart is also equal to a line measured to be equal to one inch...
Last edited by Def Mute; Jun 16, 2013 at 06:39 PM.
Thread Starter
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Road Master
Joined: Jun 2012
Posts: 1,119
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From: USA
If you really must know, the only way is to fill it to the add mark, then add one ounce at a time and see how the level climbs the stick. I can visualize several situations where the ounce/mark is not constant. The rate the level will rise per unit added will vary by the surface area of the reservoir and I have no idea what is submerged in oil and what is partially submerged in oil. If something is partially submerged when the level is at the add line and becomes totally submerged at a slightly higher level, the quantity needed to raise the oil level another dot becomes greater once that unit is submerged. One other way to look at it is to visualize a cube resting on one edge (you see a diamond shape when looking from the side.) Now add liquid. Very little will be needed to raise the level in that first little corner spot, but as the area becomes wider, each unit of liquid will raise the level less. Once the cube is past the halfway point, the remaining container becomes smaller again and each unit of liquid added change the level by an increasing amount.
We check oil level on the jiffy stand so we might have a cube that is similar to the one sitting on an edge. I have no idea if as oil is added, the level in the cube is in the area of increasing or decreasing size so again, the rise per unit of added oil may not be constant. Now, would you also like to know what time it is?
We check oil level on the jiffy stand so we might have a cube that is similar to the one sitting on an edge. I have no idea if as oil is added, the level in the cube is in the area of increasing or decreasing size so again, the rise per unit of added oil may not be constant. Now, would you also like to know what time it is?
I know I asked for it and I got it.
Now for the next question!
How much does the Coriolis Effect manage to change the flow of the oil in the crankcase depending on which hemisphere you are currently riding in?
Last edited by Falcon195; Jun 16, 2013 at 07:09 PM.
Road Master
Joined: May 2012
Posts: 1,137
Likes: 8
From: illinois
you do realize the dot's really are not there to measure anything off of. they are simply there for contrast so you are able to see where the oil is on the stick. or are you also trying to figure out how much oil each cross hatch on your cars dipstick represents ?
