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I bought some stuff at the VOlvo dealer that they used, made by 3M. I sprayed the TB and sprayed/wiped the inside of the connecting hoses. Then I sprayed the inside of the engine through the TB. When I was all done my car started making a high pitch whistle. After 20 miles of driving it was still there. I noticed that there is a hole inside the engine right after the TB. Where does that hose go to?. At this point the only reason I could think why the high pitch noise was happening because of me spraying in to the engine through the TB and it drained into the hole. I took some desperate means and pored some engine oil down that hole (1/2 cup) and it cleared up. Did that 3M TB cleaner Fluid go into the engine oil? Did I do something bad, what should I do?
Thank You
Sandro Seminara
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