Join Date: Dec 2007
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Another Coolant Leak, and a disturbing question.
Hello all, I have a disturbing question to ask but I will give some up front information first. I bought the 2001 Bonne new, and had the coolant leak recall done by the dealer about 2 or so years ago. After they were done I put a bottle of stop leak in just to make sure everything got sealed up. Last week the thermostat went bad, with the engine temp maxing out at about 130-140 degrees. I purchased a new 195 thermostat, completely flushed the system, refilled with new Prestone DEX (I was not aware of this site and all the issues with DEX-Cool) and installed the thermostat and bled the system.
I drove to work the next morning (14 miles each way) and when I got home the overflow tank was down to the cold mark. I thought there may have been some air left, so refilled it back to the hot level. The next day I drove to work and rechecked it and was down a little. Drove home and was down some more and I catch a whiff of coolant. So now I am at about 60 miles since the thermostat/refill change. Now I start Googling the net and seeing all the Intake Manifold/LIM issues. I drove to work a third time and the over flow tank is down more. Drive home, smell coolant, tank nearly empty, and call it quits at about 90 miles since the thermostat was replaced. Now convinced it is the IM, I went down to Autozone and picked one up (funny they had 3 in stock?) for $129, a Dorman make and a set of LIM gaskets (FEL-Pro) and again not aware of the aluminum ones, as I stumbled on this great informative site after the fact.
I R&R the IM and LIM gaskets, button everything back up, run the engine for probably 10-15 minutes checking for leaks, all looks good. Now Sunday morning, I decide I should probably change the oil in case the coolant leaked in to the crankcase. When I removed the drain plug, OH MY GOD! It was like a frozen chocolate milkshake oozing out. My heart sank in to my stomach, I was sick at what I was looking at. I took off the filter and it was totally full of what look like brown gooy molasses. I was in a near panic.
I went and bought 4 5qt jugs of oil, filters and a bottle of Gunk engine cleaner. I filled the engine with good oil and filter, ran the engine for a few minutes, drained the engine and still was milky. Filled back up, new filter and the bottle of Gunk, ran 10 minutes, drained, and looked better but still lightly brown. Refilled again, new filter and ran for about 20 minutes, drained and looked clear. Refilled, new filter and oil on the stick looks clear. The oil has been in for 60 miles (2 trips to work) still looks clear, coolant tank stays at the full level, no coolant smell, no knocks or clattering, so looks like a good fix. I plan on changing the oil after 250 miles.
I never thought to check the oil level as the engine never burned oil, and never thought about the coolant contaminating the oil.
So, finally, here is my disturbing question. With all the experience with this issue, and knowledge on this web site, what type of internal damage, if any, would I expect possibly running the engine for 90 miles, plus that 10-15 minutes after the IM/LIM replacements? It is running as usual right now with no abnormal sounds. Should I do anything other than what I did?. Thanks for any support or informatioin.
By the way, I too have nearly every problem discussed in this forum from window regulators, to steering, to vibrations, etc etc stc. Iím glad I found this site.