I have a 2000 Chevy Malibu LS 3.1 V6, the car is burning oil, and I want to know your opinion.
The car had thermostat problems and was overheated, after I changed the thermostat the engine started smoking and every body told me it was the head gaskets, but the car is not burning coolant, is actually burning oil.
When I start the car, first is the steam coming up from the tail pipe, then when the car is warm, the oil smoke stars to come out from the tail pipe.
I checked the spark plugs and all six showed a lot of oil on them, so my question is, is this because the piston rings or the engine is getting oil from somwhere else beside the piston rings.
There is times when is not smoke at all, and then again a lot of smoke.
In the past I saw cars burning oil from probably one or two piston chambers, but no from all of them at the same time, and on this one when I checked, all the spark plugs were wet in oil.
I was researching about this particular engine, and looks like have some issues with the head gaskets due to overheating and the fact of the heads being made from aluminum.
Please can you tell me what can I check before taking the engine apart.