Oil is leaking into the cooling system, is there a gasket repair additve that I could use?

Asked by Oct 11, 2012 at 11:29 PM about the 2005 Chevrolet Venture LT

Question type: Maintenance & Repair

I've had gaskets leak before but usually it's water into the oil not oil in my radiator. I've used copper gasket repair additives before but the pressure this time is the wrong way. is there an oil additve to repair gaskets? or am I looking at big bucks to fix? and how do you drain the rad anyway?

10 Answers

31,895

The radiator is cracked and when the oiling system is under pressure while running the pressurised oil is seeping into the coolant. Its the only explanation since its the only place pressurised oil comes near the cooling system. Get the radiator replaced soon before it busts open and drains the oil and ruins the bearings.

31,895

Drain plug is on the bottom of the radiator. If you want to tackle this in your driveway/garage let me know the engine size and I'll post the in depth procedure. Its fairly simple but pretty messy.

1 out of 1 people think this is helpful.
Best Answer

Thanks John, Any help you can share is much appriciated I will tackle replacing the rad this weekend. The engine is a 3.4l with air conditioning. I see the engine mounts are right over the rad. do I need to remove one to get the rad out? Thanka again. AF

1,735

that is usually the intake gaskets , those dont have engine oil cooler in the radiator?

31,895

Intake gaskets don't come into contact with pressurised oil so no kevin your wrong.

I had the rad replaced May 2011 due to erosion/pin hole leaks. Also the water pump has recently started to chirp a little. It stopped chirping when I cleaned out as much oil as I could from the overflow reservoir and under the rad cap. Another bud thinks it might be the water pump.... thoughts?

31,895

Also Kevin i never said engine oil....... Have you checked the transmission fluid recently? The water pump doesn't come into contact with pressurized oil. The ONLY place oil comes into contact with the cooling system is the radiator. Whether its engine oil or transmission "oil" pretty much every domestic since the early 90's has a radiator that has some sort of oil flowing through it-------------------------------. The cooling system at some point during driving becomes pressurized. Therefor if the hole was big enough for unpressurized oil to contaminate the cooling system then that means as soon as the cooling system attempts to become pressurized the coolant would transfer to the oiling system almost immediately. Now if it were to come in contact with oil under pressure then the oil would negate the coolant the entire driving trip and prevent it from coming into the oil's system. Very little coolant may pass after the vehicle is shut off if any at all, considering how little is passing at the oils 45+psi, the cooling systems 13psi looks weak.

31,895

simon click on my name and send me a message containing your email address and i can send the procedure in either a word document or pdf.

1 out of 1 people think this is helpful.
360

radiator

I have a 2003 venture and it's doing the same thing. I was told by a mechanic that it most likely is my oil cooler. Which is located behind my oil filter. I was told that was the only year that did that to. I'm Taking it off this weekend and seeing if it is crack.

Your Answer

Add photo

Related Questions

  • How to tell if your gauge (temp) is bad? 10 answers

    Have replaced thermostat and water pump. Engine gets hot but radiator stays cold. Can't tell if fans work. Tried running with AC on but fans still did not move. No air in lines. What do I do now?

    2004 Chevrolet Venture LS

    -

    Maintenance & Repair

  • Replacing Alternator 32 answers

    I can't find an exact match for my broken alternator GM P/N : 10448038, 14V, 140Amps (Valeo). I'm considering to replace it with a 12V, 120Amps. Will this work without worrying about anything?

    2003 Chevrolet Venture LT Entertainer

    -

    Maintenance & Repair

  • Throttle Position Sensor and Gear Shifting 9 answers

    I read http://www.ehow.com/how_677485... (as advised by master DavidH25 --- thanks!) and I quote..."The main component it (Throttle Position Sensor) affects is the transmission, which will engage mo...

    2003 Chevrolet Venture LT Entertainer

    -

    Maintenance & Repair

  • What will stop the rusting on the lower panels of 2004 Chevy Venture van? 1 answer

    Rust forming on the lower panels in front of rear wheels -- what can be done about it? .

    2004 Chevrolet Venture Base Extended

    -

    Maintenance & Repair

  • Head gasket on 96 3.8 l camaro 12 answers

    I have a camaro I was driving it home started to heat up oil pressure dropped then died let t cool then jumped it. It started up and oil pressure was low but ran it failed the compression test co...

    1996 Chevrolet Camaro Z28

    -

    Maintenance & Repair

Venture

Looking for a Used Venture in your area?

CarGurus has 590 nationwide Venture listings starting at $1,995.

ZIP:

Search Chevrolet Venture Questions

UK Questions

Are you a UK consumer? CarGurus now has a discussion forum in the UK.

Chevrolet Venture Experts

#1 Tom Demyan
Tom Demyan
Reputation 540
#2 FordNut
FordNut
Reputation 480
#3 carGrrl
carGrrl
Reputation 300
View All

Related Models For Sale

Used Chevrolet Uplander
3 Great Deals out of 1,145 listings starting at $1,995
Used Honda Odyssey
412 Great Deals out of 26,834 listings starting at $1,600
Used Dodge Grand Caravan
396 Great Deals out of 34,503 listings starting at $1,995
Used Chrysler Town & Country
540 Great Deals out of 20,223 listings starting at $2,188
Used Dodge Caravan
833 listings starting at $3,900
Used Toyota Sienna
309 Great Deals out of 27,452 listings starting at $900
Used Pontiac Montana
387 listings starting at $3,659
Used Ford Explorer
1,096 Great Deals out of 72,155 listings starting at $1,000
Used Chevrolet Suburban
557 Great Deals out of 19,206 listings starting at $1,964
Used Nissan Quest
96 Great Deals out of 3,194 listings starting at $1,200
Used Chevrolet Impala
917 Great Deals out of 35,385 listings starting at $1,700
Used Chrysler PT Cruiser
22 Great Deals out of 3,802 listings starting at $1,500
Used Buick Terraza
245 listings starting at $2,695
Used Chevrolet Astro
287 listings starting at $1,815
Used Chevrolet Blazer
1,336 listings starting at $2,000

Used Cars For Sale

2005 Chevrolet Venture LT For Sale
9 listings starting at $3,995