am I SOL if that is the case? would the citric flush fix it.

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Ben
1987 190d 2.5Turbo

No, but I'd do a complete overhaul of the cooling system starting with a flush and new thermostat.

Neighbor lost a Jimmy to Deathcool

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-Typos courtesy of my mobile phone.

X3 - and by that I don't just mean agreed, flush it more than once and use a couple gallons of steam distilled water to do the final rinse and drain. Then, use distilled water to mix the new correct anti freeze.

Get the death-cool out ASAP.

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1987 300D (230,000 mi on a #14 head-watching the temp gauge and keeping the ghost in the machine)
Raleigh NC - Home of deep fried sushi!