OUCH! Oil in my coolant…

It’s been a while blog… Here’s a quick entry regarding a little disaster I had recently.

Driving along one day and I get a “low oil” message on my display. This isn’t the first time I’ve seen it, it’s been about 5,000 miles since my last oil change with a few autocrosses mixed in so I didn’t think much of it. Get home, add a quart, and order an oil change kit from ECS tuning which was set to arrive in about a week.

Drive a few more days and then I get a “low coolant” message. Ok… The oil change kit is coming the next day and I figure I’ll add some water when I do the oil change. Temp’s were fine and never went above 240’ish.

Oil change goes fine, oil looks normal, normal amount of oil came out, nothing to worry about.

I finish up the oil change and go to add some distilled water to coolant and… FUCK. It’s super milky, exactly like chocolate milk. Thick chocolate milk. The coolant cap on the inside is cracked and plastic is falling off of it into the reservoir, the washer around the coolant cap is disintegrating. FUCK.

I immediately check the OFHG (Oil Filter Housing Gasket) area since it’s an area known to fail on the N55 and it looks clean. Fast forward a few days, get it into the shop and it’s a mess. He popped off the hose that goes into the heater core and it was thick, like curdled chocolate milk. All the large hoses were deformed. My indy shop suggested we pretty much replace the whole cooling system. This is the point where I’m wondering if it’s time for a new car but given my kids high school tuition starting this year, a new car isn’t happening for at least 4 more years. I decide to just do it in hopes my baby will last me 4 more years.

It took about 2 weeks to get all the hoses needed for the repair. Some were only available straight from the motherland as they are often not replaced. Below is a list of everything replaced. Radiator, water pump, thermostat, you name it, it was replaced all to the tune of about $5000 out the door.

The failure was the auxiliary oil cooler under the coolant reservoir. The mechanic said it was hard to figure out what failed because it was such a sludgy mess but that the OFHG looked fine. He was able to flush out the heater core thank God, as if that needed replacing he said we would be having another conversation (I guess it’s super hard to get to, think it involves taking apart all of the dashboard area.)



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