On what incline must the bus be when checking the engine oil level?

Question

DentroTest · Accepted Answer

To check the engine oil level reliably and accurately with the dipstick, the bus must be parked on completely flat and level ground. If the vehicle is on an upward or downward slope, the lubricant shifts toward one end of the sump, distorting the reading and giving values higher or lower than the real ones. Likewise, the check must preferably be carried out with the engine cold and switched off, or after waiting a few minutes after switching it off to let the oil drain to the bottom.

On what incline must the bus be when checking the engine oil level?

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