Join Date: Mar 2012
Location: Franksville, WI
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Coolant already bad at 35k miles?
I purchased a coolant test strip kit to verify the condition of the coolant in my new to me 2010 F250.
I dipped the strip in the degas bottle, shook and waited for 45s as stated in the instructions.
I'm safe temperature wise, but had zero - or at least the lowest possible on the chart, level of nitrates! Which suggests I need to drain, flush and chemically condition the system. The kit included 5 test strips so I did a second with the same results.
I recently had drained about 4gal of coolant to install my bypass coolant filter and it looked like very healthy coolant - clear and bright gold in color.
I guess I'm suprised that the coolant would have deteriorated so quick at only 2yrs old and 35k miles on it....what would cause that? My oil/coolant deltas are within a 2-3 degrees of one another - so all is well on that front.
I've got Fleetguard Restore and Restore Plus on the way. I need to pick up Premium Gold and distilled water and wait for a tolerable weekend to tackle this project.