There are two problems that eat holes in liners. One is electrolysis and the other is cavitation. Electrolysis is caused by stray voltage in the cooling system like from an alternator. If radiator/engine isn't properly grounded the coolant becomes acidic and will eat away at the liners. Cavitation is from small bubbles exploding against a liner due to cylinder vibration/pulsing. I have seen truck engines with less than 200k miles on have a 1/4" thick liner ate through due to electrolysis. What you got to be concerned about is keeping your coolant at the proper PH. You can get test strips to test your coolant. If the nitrates are too low, you can add an Supplemental Coolant additive (SCA). This will add Nitrates and put your coolant to the proper PH level when you add the correct dosage that your test strip bottle should tell you. A coolant filter will have SCA's in it also. It is sort of like a cake of soap that releases SCA's slowly so it is always at the proper PH. It should still be checked every service. The SCA also puts a protective coating on the liner keeping the exploding bubbles away from the liner surface. I've seen an engine with 1,750,000 miles on, overhauled for the first time and the liners had no cavitation on. We serviced his truck regularly and kept track of the coolant every service. There are different test strips for different coolants. The main difference is the conventional coolant(ethelyene glycol), or the long life coolant (propelyene glycol). Propelyene glycol coolants are less prone to produce cavitation. But if regular coolant is taken care of, it will do just as well. This is another subject by itself. By the way, I work at a CAT dealer and have seen the good and the real ugly on this subject. I would estimate 35% of overhauls are caused by cooling system neglect.
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Today's Featured Article - A Cautionary Tale - by Ian Minshull. In the early 1950s my father bought an Allis Chalmers B and I used it for all the row crop work with the mangolds and potatoes, rolling and the haymaking on our farm. The farm and the Allis were sold and I have spent a lifetime working on farms throughout the country. I promised myself that one day I would own an Allis. That time event
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