Ford F-150/F-250: How to Replace Your Dipstick Tube

The only time the average F-150 or Super Duty owner is going to care about their oil dipstick tube, is when it breaks. It's a simple part to find and to fix, but other factors can make this repair a hassle.

By LeRoy Wirz - September 19, 2014

This article applies to the F-150 (2004-2014) and the F-250, F-350 Super Duty (2005-2014).

Replacing the dipstick tube typically goes one of two ways: It will will either be relatively easy or a significant challenge to your mechanical ability, inventiveness, problem solving skills and most certainly your patience. The tube is only held in with a bolt and an o-ring. If everything is in good condition, removing that stuff will be easy. If the dipstick tube is brittle (or broken), then this repair will be difficult. If the bolt holding the dipstick to the the block is rusty or rounded off, this repair will be more of a hassle.

Materials Needed

  • Socket set
  • Bolt extractor
  • Ratchet
  • Pliers
  • WD40
  • Easy Out Screw Extractor Set (if needed)

Step 1 - Remove dipstick

Remove the dipstick and place it away from the truck where it will not be damaged.

Step 2 - Unbolt dipstick tube from block

Oil Dipstick Tube Diagram
Figure 1. F-150 Oil Dipstick Diagram

The first task is to locate the tube (#2 in Figure 1) and determine whether or not it is supported by a bracket (#1 in Figure 1) that is bolted to the exhaust manifold or engine block.

Visualizing the tube support and bottom of the tube, secured by the o-ring (#3 in Figure 1), may be very difficult due to other parts in the engine compartment being in the way.

If this is the case, removing the tire and wheel assembly with proper, secure blocking, and removal of the inner fender well liner may allow visual and physical access.

Once the support bolt/nut and the bottom of the dipstick tube have been located apply a lot of anti-corrosive such as WD40 to each location and give it a lot of time to penetrate and eat its way through the corrosion.

Be patient. If this is done the evening before the new tube is to be installed so much the better.

The time spent letting the WD40 do its work will save you a great deal of frustration and extra effort.

First loosen the support and completely remove the bolt/nut used to fasten the tube in place so that the tube can be freely moved back and forth and left and right.

(Related Article - How to Remove a Tire - Ford-trucks.com)

Pro Tip

The above instructions are specifically for the F-150, but the basic process is the same for F-150s, F-250s, gasoline engines, and diesel. There will be some differences on your particular truck, but it's fairly easy to "figure it out." You shouldn't have to disconnect or remove other parts in order to pull the dip stick tube.

Step 3 - Remove dipstick tube from oil pan

At the bottom of the dipstick tube immediately before it enters the oil pan gently tap the tube to set up vibrations which will further loosen the corrosion around the tube. Wiggle the tube back and forth while pulling the tube out of the hole which goes into the oil pan. If the tube remains stuck in the oil pan continue to spray with WD40, wait a period of time, tap and pull. Continue this process until the tube is removed from the oil pan.

If the tube is sufficiently corroded and weakened, it may break. If after the tube breaks there remains enough of it sticking out of the oil pan, continue the spray, tap and pull using pliers or vice grips to hold onto the stub, until the remainder of the dipstick tube is removed. Look at the new tube and see if the piece(s) of the old tube you have removed look like or make up the bottom of the old tube to look like the bottom of the new one.

If not enough of the old tube sticks out of the oil pan to allow a tool to grip it, a tool called an "Easy-Out" can be used to extract the stub.

Step 4 - Install new dipstick tube

Once all of the old dipstick tube has been removed, install the new one, replace the bolt/nut securing the bracket, and tighten in place. The new tube should come with a new O-ring, if it doesn't, check the old one for any cracks. If it is worn, buy a new one and replace it, they usually go for an average of $2.50.

Replace the dipstick.

(Related Article: How to Choose the Right Oil - Ford-trucks.com)

Featured Video: How to Replace Your Dipstick

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