You can get various products at NAPA or other such places that are simply called cooling system flush, fast flush, etc. Just follow the directions, then make sure you do a very good job of flushing that stuff out when you're done. Most I think are a phosphoric acid so be carefull with them... I find those products take out a lot of crap and gunk. I don't have a big problem with scale tho... I never had much luck with vinegar for what I need to clean out either.
Just remember to pull the block drain (and don't open the drains, REMOVE THEM), the rad drain and the lower rad hose and make sure you spend a lot of time backflushing both the block and rad until you get all the crap out. Once that's done it should help it run a lot cooler.
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Today's Featured Article - Upgrading an Oliver Super 55 Electrical System - by Dennis Hawkins. My old Oliver Super 55 has been just sitting and rusting for several years now. I really hate to see a good tractor being treated that way, but not being able to start it without a 30 minute point filing ritual every time contributed to its demise. If it would just start when I turn the key, then I would use it more often. In addition to a bad case of old age, most of the tractor's original electrical system was simply too unreliable to keep. The main focus of this page is to show how I upgr
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