In addition to oil changes, make sure you maintain the supplemental coolant additive (SCA)in the coolant. You should be able to use the Extended Life Coolant (Red) that already has the SCA's in it. Check the SCA level at every oil change with the test strips. If SCA's are not at the correct level, you can add DCA 4 to correct it. The test strips and additive can be purchased at Ford or International (usually cheaper). The 7.3 (I found out too late) can be prone to block cavitation if the coolant is not maintained properly.
I have a 1999 7.3L and I currently have the engine laying on the floor of my shop because the left rear cylinder cavitated and was allowing coolant into the cylinder. This could have been caused because I did not know enough to maintain the SCA level.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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