GAGE 6V4016 - Caterpillar

Do not under fill or overfill engine crankcase with oil. Either condition can cause engine damage.
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The machine must be on a level surface and the parking brake must be engaged.
Remove dipstick (1). Inspect the dipstick in order to determine the engine oil level.
Before you start the engine, the oil level must be between the "ADD" mark and the "FULL" mark. These marks are on the "ENGINE STOPPED" side of the dipstick.
When the engine is running at low idle, maintain the oil level between the "ADD" mark and the "FULL" mark. These marks are on the "LOW IDLE" side of the dipstick. Note: Allow sufficient time for the engine oil to become warm.
If necessary, remove the oil filler cap (2) and add oil.
Clean the filler cap and install the filler cap.