2000 mercury villager oil turning to sludge?

Car makes sludge due to-

1.Engine running too cold- check your thermostat valve which runs your car engine at optimum Temperature.

2.Blow by gases- piston rings are worn out.Get the compression of each cylinder checked.

3.Coolant mixing with oil- check for head gasket leak,oil cooler leakages.,cylinder block leaking,

It is an older car. There might just be some gunk in there due to age.

I'm a bit confused though... How do you know that the oil turned to sludge? If you just got the car serviced, I doubt you drained all of the oil out. Did you just look at the dipstick to check the level? Oil looses it's yellow color pretty quick and turns brown/black. That's normal.

If you are really concerned, here is what I suggest.

Go to the auto parts store and get a can of motor flush. Follow the instructions on the can. Then change the oil again, but use a high quality synthetic oil like Mobil 1, Pennzoil Platinum, or Castrol Syntec. Make sure it's the full synthetic and not a blend. Also, get a good oil filter. Fram is crap. Use a PureOne or Mobil 1 filter.

Once you do that you should be fine.

If you didn't buy the car new the previous owner probably neglected servicing properly. If the vehicle runs ok now I'd just drive it out and sevice regularly with a good grade 10/30 or 10/40 engine oil. It's too late to switch to synthetic. Your van is a Nissan and with care they have a good record. Good luck.

Has something to do with Oxidation not waiting for car to warm also

number of oil changes. Not the mechanic's it's you and how you maintain your vehicle The Temperature has to be so high then drive

coolant in the oil most likely head gasket leaking

Use synthetic or semi synthetic oil, it will not form sludge.

commence through cleansing the idle air administration and the in the throttle body. at the same time as your at it verify the air clear out. a automobile can,t run solid if it would want to,t breathe. at the same time as became the magnificent time you replaced the plugs and wires?