Adding coolant to 12 duramax
Low coolant notice on cool mornings. Read the manual and tried by getting to operating temp and ran truck for five minutes at 2500 rpm after adding some coolant. Coolant came out since manual says to take cap off. Supposedly, add a little at a time using same process. Not sure I like the coolant coming out!! Have done searches and looked at utube. Prefer your advice!!! 2012 Chevy duramax thanks
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2017 Montana 3611
2012 Chevy 2500
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