Join Date: Oct 2004
Location: Austin, Texas
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Dark Antifreeze in coolant recovery tank.
I decided to drop the factory fill oil at 1000 miles. So with 999 miles, I crawled underneath and let all the old oil out (which BTW looked VERY clean, although that is not really a barometer for the condition of it). After the oil was drained and the filter was changed (PITA by the way, have to remove the skid plate) I started filling the new oil.
I noticed that the coolant tank oil looked very dark. I went and got my shop light and shone it on the side of the bottle. It still had a green hue, but it was a VERY DARK green hue. Concerned, I took both the coolant recovery tank cap and the radiator cap off and looked down inside. The coolant in the recovery tank looks gross. The coolant in the radiator looks nice and green, much lighter than than which is in the recovery tank, and seemed ok, when I shined my light down in there.
So, I am wondering, do any of you all have dark coolant in your recovery tank? I do take a lot of short trips, my work is only about 2 miles away. The oil and the coolant in the radiator proper show no signs of contamination. I'm gonna take this to the dealer to look at, but if they say it's nothing, I'm gonna get some Nissan coolant and drain/refill the recovery tank and watch it closely.
I know the job of the recovery tank is to skim the crap that is on top, but what is in the recovery tank seems like a lot of crap for 1000 miles.
I had already ordered an oil analysis kit from Terry Dyson for my 1st oil change, and now I am really glad that I did. The spectroanalysis will show if there is any antifreeze in the oil, even in concentrations less than 1%.
2004 Titan XE Crew Cab 4x2 Born on 9/22/04
Purchased 10/22/04 at South Point Nissan in Austin
Options: XE Preferred Package
TRADED IN 9/1/06 for something more fuel efficient. My gf misses the White Titan....lol.