Member
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Join Date: Dec 2019
Location: SW Washington
Posts: 595
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Member
Join Date: Dec 2019
Location: SW Washington
Posts: 595
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Rust is from lack of cooling system maintenance, not coolant brand. The Toy stuff is just low silicates.
If your expansion tank line was clogged then probably the heater cores and radiator aren’t much better.
You should probably flush your system a few times. At least until it stays pretty clear. Then re-install the thermostat and fill with a coolant of your liking.
You might consider back flushing the heater cores.
I also put water wetter in my systems. It’s supposed to help with heat transfer and hot spots. It’s cheap and may do as advertised. My rigs run in the high 180’s most of the time.
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Owned 82, 83, 87 pickup, 98, 99 SR5 4runner
Currently own a 98 SR5, 5spd, 4x4, e-locker, no sunroof. 2012 LTD with the normal options.
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