Did you ever notice this?
Thread Starter
Racer
Joined: May 2003
Posts: 484
Likes: 0
From: L. I. NY
Did you ever notice this?
I was cleaning the car today while the engine was idling and after the engine was off for awhile I decided to take off the oil filler cap just to wipe it down.
I noticed moisture and/or condensation on the inside of the oil filler cap.
I did this again and noticed the same. I just did an oil change yesterday and I checked the oil dipstick to make sure I didn't see any white condensation on it or anything else but clean Mobil 1. All looks well on the dipstick.
Is this normal?
I noticed moisture and/or condensation on the inside of the oil filler cap.
I did this again and noticed the same. I just did an oil change yesterday and I checked the oil dipstick to make sure I didn't see any white condensation on it or anything else but clean Mobil 1. All looks well on the dipstick.
Is this normal?
Racer
Joined: Mar 2006
Posts: 477
Likes: 0
From: Plymouth Michigan
Originally Posted by LS7
I was cleaning the car today while the engine was idling and after the engine was off for awhile I decided to take off the oil filler cap just to wipe it down.
I noticed moisture and/or condensation on the inside of the oil filler cap.
I did this again and noticed the same. I just did an oil change yesterday and I checked the oil dipstick to make sure I didn't see any white condensation on it or anything else but clean Mobil 1. All looks well on the dipstick.
Is this normal?
I noticed moisture and/or condensation on the inside of the oil filler cap.
I did this again and noticed the same. I just did an oil change yesterday and I checked the oil dipstick to make sure I didn't see any white condensation on it or anything else but clean Mobil 1. All looks well on the dipstick.
Is this normal?
1.
it is just moisture being formed by the temperature differences between the outside air and the rising temperatures of the oil. Once you creat the moisture if you shut down yor engine the moisture mixes with the oil and forms the yellow sludge. This use to happen all the time with my 87 turbo if I only drove it for 10 miles in the winter. Think of your muflers when you start up the car. The temp changes cause water condensation and the water drips out of the exhaust pipe till it fully evaporates. So do not worry. Drive the car!
2.
The condensation shows that there is some water in the oil. Whilst it could mean that a leaking gasket is allowing water to get into the oil, it is much more likely to mean that you have been making a lot of short trips, so that water condensation has collected in the crankcase.
Just take a rag or cloth and clean it out, but be carful not to push any down the filler tube
Burning Brakes
Joined: Apr 2004
Posts: 1,235
Likes: 2
From: Haymarket VA
CI 7-8 Veteran
If there's no water down near the bottom of the dipstick and if the oil on it doesn't look cloudy or milky then it's only a little condensation gathering near the oil filler cap. Nothing to worry about.
Le Mans Master
Joined: Feb 2003
Posts: 6,683
Likes: 144
From: Memphis Tennessee
To some extent it is normal.
One of the duties of the PCV system is to rid the oil of moisture cause by temperature changes (as SUPRA said). Keep checking your oil and cap, and take notice to the dip-stick looking for rust or any other discoloration.
And lastly, check your PCV system from the throttle-body all the way back to the rear of the intake manifold on the passenger side. Any leak or missing hose will cause the PCV not to work and the moisture to build up inside the crank case.
One of the duties of the PCV system is to rid the oil of moisture cause by temperature changes (as SUPRA said). Keep checking your oil and cap, and take notice to the dip-stick looking for rust or any other discoloration.
And lastly, check your PCV system from the throttle-body all the way back to the rear of the intake manifold on the passenger side. Any leak or missing hose will cause the PCV not to work and the moisture to build up inside the crank case.
Thread Starter
Racer
Joined: May 2003
Posts: 484
Likes: 0
From: L. I. NY
Allegro,
Is the PCV system running down underneath the fuel rail runner on the passenger side?
Is there a PCV valve anywhere that I can remove and replace with a new one like with the old Chevy's?
Is the PCV system running down underneath the fuel rail runner on the passenger side?
Is there a PCV valve anywhere that I can remove and replace with a new one like with the old Chevy's?
Race Director
Joined: Sep 2004
Posts: 17,786
Likes: 4
From: Redsox, Pats, Celts & Bruins !!! Redsox Nation !!!
St. Jude Donor '06-'07-'08-'09-'10-'11-'12
Originally Posted by LS7
Allegro,
Is the PCV system running down underneath the fuel rail runner on the passenger side?
Is there a PCV valve anywhere that I can remove and replace with a new one like with the old Chevy's?
Is the PCV system running down underneath the fuel rail runner on the passenger side?
Is there a PCV valve anywhere that I can remove and replace with a new one like with the old Chevy's?
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Joined: Jul 2004
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From: Lake Havasu City, AZ
Water and acid are the combustion by products of gasoline engines.
That is why frequent oil changes are better than extended drain intervalsand short runs of less than 20 minutes are considered sever service conditions by GM. That is also why the oil should ALWAYS be changed before storage.
Getting the car up to operating temperatures "boils" off slight amounts of water and why drives of greater tnat 20 minutes are always recommended.
If it is slight , the oil is not milky or cloudy and there is no water on the dipstick, then you are in a normal operating range.
That is why frequent oil changes are better than extended drain intervalsand short runs of less than 20 minutes are considered sever service conditions by GM. That is also why the oil should ALWAYS be changed before storage.
Getting the car up to operating temperatures "boils" off slight amounts of water and why drives of greater tnat 20 minutes are always recommended.
If it is slight , the oil is not milky or cloudy and there is no water on the dipstick, then you are in a normal operating range.
