How much damage was done if my car was overfilled with oil and had thick white exhaust and gear changing problems?


Asked by Jul 24, 2015 at 06:17 PM about the 2005 Nissan Sentra

Question type: Maintenance & Repair

Today I had a bad oil change- I left the shop and my car was having problems changing
gears (automatic) and there was thick white smoke coming from the exhaust, I drove
maybe a mile before turning around and returning to the place.  They said that they had
overfilled my oil, he fixed it and now my car is running fine.  But still,  My question is- how
much damage did this potentially do to my car? I have a 2005 nissan sentra with over
119,000 miles on it.

13 Answers


How much overfilled was it?

117,895 9/overfilling-oil-worst-case-scenario


Certainly at the very least this is hard on catalytic converters, but it would be only a guess if it caused damage. I would not return to that place for service in the future.

2 of 2 people found this helpful.

He didn't tell me by how much, but I noticed pretty soon after pulling out that something was wrong. I don't know if that helps.

1 of 1 people found this helpful.

Joe, link doesn't work."Discussion not found"

If the engine was overfilled too much, like way too much, the crankshaft will dip in to the oil in the crankcase, in the pan, and whip it in to a foam like a blender..causing loss of oil pressure. Then the PCV will try to suck out the air from crankcase - like it's supposed to do - and cause the white smoke from going through intake vacuum. What the heck? They forget to drain before re-filling? Talk about incompetent. But as for the shifting problems, don't know. But chances are since you went right back, and now (I hope) you have the right amount of oil, no damage. But they should have refunded your money for original oil change. Let me take a wild guess...Jiffy-Lube? They do have an intensive employee training program. Lasts 3 minutes.

3 of 3 people found this helpful.

Thanks Bob, I filed an incident report with the oil change place so that there is a paper trail in case something happens, the manager said that my car would be fine since I didn't drive it very long, though I don't really have any faith in his judgement

1 of 1 people found this helpful.

Fordnut -of course it was jiffylube, first (and last) time I ever went there too!

1 of 1 people found this helpful.

I would doubt you will have an issue, but you never know. It is good that the issue was documented. Things like this is why I do all my own service work.

2 of 2 people found this helpful.

Hey guys, joemom's link works if you get rid of the space between the 3 and 9. Can't have a space.

1 of 1 people found this helpful.

Would you advise going to my trusted mechanic to check that my engine is ok?


No- he will wonder why? you didn't take it to him- I'm wonderin' too-

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