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How to Blow Oil Out of a Dipstick Tube

There may be several reasons why oil is blowing out of your oil dipstick tube. There can be engine malfunctions or user mistakes. You may want to remove some of the oil because of overfill that occurred during an oil change. Whether your engine is blowing out oil by itself or if you are trying to remove some of the excess fluid to avoid this blowout, there is an explanation for these situations and a way to rectify the problem.

Instructions

Accidental Blowout

1

Overfill your engine with oil and leave it that way if you want an accidental blowout. When you are changing your oil or adding oil because of low fluid levels, you may accidentally put in more than the optimal level. Always add oil in small quantities until the dipstick reads the appropriate level.

2

Forgetting to put the dipstick back into the tube is a sure way to blow oil out of the dipstick tube when the engine is running and there is pressure. Just remember to put the dipstick in all the way after you are done checking the oil to avoid oil blowout.

3

Clog your positive crankcase ventilation valve. Check to see if it is clogged by looking at the valve cover on the drivers side of the vehicle. Remove the valve and shake it to see if it rattles to indicate it is fine. While the engine is running, place your finger over the end of it to test for suction; suction means the PCV valve is not the problem for oil blowout.

Removing Oil from Dipstick Tube

4

Locate the drain plug. Usually, it is located on or near the oil pan. Position the oil drip pan below the drain plug.

5

Turn the plug counterclockwise until the oil starts to drain out. Let only a little bit out, then tighten the plug again in a clockwise direction.

6

Check the oil level on the dipstick. Release more oil if there is still too much oil and it is above the indicator line. This is the only safe way to remove excess oil from the dipstick. You do not necessarily want the oil blowing everywhere as it may get messy, smelly and smoky when the engine warms up.