Engine oil top-up arithmetic calculator

Calculate measured local calibration and estimated addition to supplied target with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use measured local calibration and estimated addition to supplied target to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Current measured distance below reference full level (mm)
8
Desired distance below same reference level (mm)
2
Measured calibration added volume (mL)
300
Observed level rise from calibration (mm)
5
Measured local calibration (mL/mm)
60
Estimated addition to supplied target (mL)
360
Target relation
Addition estimated

Try another scenario

Current measured distance below reference full level (mm)
5
Desired distance below same reference level (mm)
2
Measured calibration added volume (mL)
300
Observed level rise from calibration (mm)
5
Measured local calibration (mL/mm)
60
Estimated addition to supplied target (mL)
180
Target relation
Addition estimated
Calculation method

Calculation method

Measured local calibration (mL/mm)

calibrationAddedVolume/calibrationLevelRise.

Estimated addition to supplied target (mL)

max(0,(currentDeficit-targetDeficit)*calibrationRate).

Target relation

Addition estimated if currentDeficit>target; At target if equal; Current level above target otherwise.

Symbols and units
a
Current measured distance below reference full level (mm)
b
Desired distance below same reference level (mm)
c
Measured calibration added volume (mL)
d
Observed level rise from calibration (mm)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Local linear conversion from user-measured level/volume calibration using one consistent measurement procedure. No engine capacity, oil grade, correct target, temperature procedure or service instruction inferred. Supported limits: Deficits>=0 in same reference scale; calibration volume and rise>0; extrapolation accuracy not guaranteed.
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