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Green Coolant?

posted by  Will740turbo on  Wed Sep 15 13:35 CST 2021
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last visit: Wed Oct 22 16:09 CST 2014
[RELATED]

1990 740 regina NA

I'm "deskunking" this 740 to make it reliable enough to drive daily.

I've done a bunch, and the water pump and its seals as well as the thermostat look pretty new. I just replaced the upper and lower coolant hoses because one was bloated from an oil leak (front cam seal).

Anyway - the car had generic green coolant in it. I emptied about 1.5 gallons from the system, but I remember it holding more.

I'm going to use fresh coolant, but do I risk anything by using the extended life green coolant? I don't really want to deal with all the extra contaminated water/coolant I might create doing a flush and rinsing the system. I'm going to use Zerex G-05 in my project car's rebuilt engine, but this car... meh. I'm not going to try to make it nice, just want to avoid corrosion.

Cheers






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