low oil pressure light and foamy oil? on 2004 Pontiac Grand Prix GTP

Low oil light came on so I took my cat a had oil changed. Brought to my work and liw oil pressure light came on. Checked oil and it looked like there was 2 quarts to much. Took it back to where oil was changed and they said I had water in my oil. So they did another oil change and it did the same thing right whenI picked it up. Have not drove it since. What should I do or what can it be and can I put Blue Devil Gasket Sealant in my motor.

by in Piedmont, MO on August 02, 2013
1 answer 3 comments
ANSWER by on August 03, 2013
if the oil is milky or foamy chances are you have blown head gasket
COMMENT by on August 03, 2013
Can I use that Blue Devil gasket sealant on my motor
COMMENT by on May 02, 2014
I had my engine replaced 4 months ago and the low oil level still comes on due to a sensor which needs to be replaced with oil pan $1000 I keep a close eye on oil level and have had no problems,need to take all these damn computer crap out of our cars and go back to basics
COMMENT by on May 02, 2014
I wouldnt recommend using any kind of sealer on an engine.to make sure your head gasket is the problem you should start by pulling the spark plugs out and pressure test cooling system , then crank the engine over to see if there is any anti freeze blowing out the cylinders