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 - Sunday Drives - by Cowboy. Summer was finally upon us here in Northern Maine. We have two types of industry up here, one being "Forestry" (Wood Products) and the other "Farming" (Potatoes). There is no shortage of farm tractors and equipment around here! I have been restoring old Farm Tractors for the past 6 years, and have found it easier and less expensive to hit all the auctions and purchase whole tractors for parts needed. My wife who works at a local school, and only has weekends and summers off, while on t
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