Author Topic: C20LET oil from the dipstick  (Read 2884 times)

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Offline StefanWylde

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C20LET oil from the dipstick
« on: August 19, 2018, 21:58:08 PM »
Before I begin, I'd like to apologize for my 'mediocre' english. It is not my main language, and I will try to explain as good as I can.

Basically I want to buy a Calibra Turbo, the engine works fine, there's no smoke from the exhaust but I found 1 major thing that bothers me.
While the car is running, when you pull out the dipstick (to check the oil level), you can see the oil being pushed out of the pipe (not enough to push it out but it's clearly visible that there is oil rising up and down while the car is running. There is no smoke coming out or anything, just oil rising up and down... This is not happening on my current C20XE redtop so I want to know what could possibly be causing this? The car has been left sitting for over 2 years and has not been moved. Does this mean that there's something blocked (breather vacuums or etc) or does it mean that the piston rings are thinned out ?


Offline agw9262

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Re: C20LET oil from the dipstick
« Reply #1 on: August 20, 2018, 06:17:02 AM »
Your English Is fine, don’t knock yourself!

Most likely thing is that it’s a blockage of some sort, especially if it’s been sat. Also who knows how long before it was left to sit the last service was or how often it’s been maintained.

So, there’s a good chance an oil change or two would cure it. Need to manually clean the breathers etc.

With that ruled out if the problem persists then it could be piston ring wear...


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Re: C20LET oil from the dipstick
« Reply #2 on: August 20, 2018, 16:24:29 PM »
Hi stefanWylde

I agree entirely with agw9262 you described the problem really good.........I would also add that the car may have been overfilled with oil so that when you run the engine the extra oil under pressure will cause a hydraulic effect and is forcing the engine oil up the dip stick tube because it is the path of least resistance.

If this is true you obviously will not be able to check the correct oil level. So you should first do a new oil change to the correct level and also before you add new oil I would do an engine oil flush to ensure that as agw9262 said there maybe a blockage somewhere possible culprit could be a blocked oil pick up pipe.

To finish I think you can rule out piston ring problems because you said that there is no smoke from the exhaust.

So 1)  Drain old engine oil

    2)  Carry out an engine flush

    3)  Fit a new oil filter.

    4)  Refill with new fresh oil to correct level

    5)  if this fails to correct problem then ...... Other items to check ....Oil pick up pipe in sump.......Breather pipes...oil ways in Cam cover etc.

Just to put your mind at rest......I do not think there is a Major problem or indeed an expensive one.

Kind Regards