Question about 2000 GMC Jimmy

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Found radiator fluid in motor oil. Oil looks like a chocolate shake. Hoping its only the intake gasket. Must the oil pan be removed to ensure all water is out of the engine?

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No, you can flush system with oil after doing repairs. Just ad oil as you would normally do on service then run car for 30 mins to hr then dump oil and change filter. Should be fine. Yes hope that it is a intake gasket.

Posted on Sep 10, 2009

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97 mercury mountaineering has oil in the radiator and coulant. Help please!


OK, lets figure out what's happening here. You are seeing "oil" in the radiator and coolant. Chances are it is not engine oil. The inly way engine oil can get into a radiator would be if a head gasket was blown. Even then, oil at those locations is not under as much pressure as the coolant is, so when a head gasket blows, what usually happens id that the coolant ends up in the motor oil and oil pan. Verify this by looking at the dipstick to see if it is extremely full. The oil could look like choclate milk. Also, open the oil filler cap and look for signs of chocolate brown goop. I'm betting you won't find that. This is good, but also bad. What you probably have in you coolant is transmission fluid. The transmission oil is circulated through a cooler located inside the radiator. If this cracks or breaks the transmission oil can leak into the coolant. However, at different times the transmission oil and the coolant are at odd with one another pressure-wise. This means that if you have transmission oil in the coolant, you probably have coolant in the transmission oil. This is very very bad, You will need to have the transmission serviced and possible overhauled to repair the damage. You will also need to flush the trans oil from the coolant system. This will require you to replace the radiator, ALL HOSES as well. Coolant hoses do not play well with transmission fluid . The inside of the hose sort of melts and gets real soft and gooey. Changing the hoses and radiator and flushing the motor should work once the transmissionhas been serviced.

Nov 12, 2013 | Cars & Trucks

1 Answer

Engine smoking, clicking sound, and over heating shaking


You may have blown a head gasket. smoking is fluids (oil and antifreeze) getting into the cylinder and burning.
SHAKING- When the antifreeze and oil enter the cylinder they don't burn well, causing the plug to foul.
Check your radiator and see if the antifreeze looks like chocolate milk, or check your oil dip stick for the same.
pull your spark plugs and inspect the ends for oil and or antifreeze

Nov 11, 2013 | 1999 Jeep Grand Cherokee

2 Answers

Can transmition fluid get mixed with antifreeze on chrysler pacifica 2005


No, Your radiator has many small ports which when antifreeze is mixed with oil or transmission fluid creates a chocolate milk looking mixture. This will not cool your engine as it needs resulting in overheating, and or blowing of your head gasket

Apr 01, 2012 | 2004 Chrysler Pacifica

1 Answer

Is it possible to get oil and water mixed in the radiator from a bad intake gasket?


pb310, Yes, it is possible to have this condition with a bad intake gasket, however the problem usually shows up in the oil pan and not the radiator. Because of the differences in pressure that these fluids experience, oil can get into the cooling system when the engine is running because the oil pressure is greater than that of the coolant pressure. When you shut the engine off the pressure is still in the cooling system and the coolant will seep into the oil galleries and eventually into the oil pan. All of this is possible when the intake gasket is faulty. Check the oil dipstick and see if the oil looks like (for lack of a better term) a chocolate milkshake. Either way, it sounds like you need to have the intake gasket replaced. Good luck with this.

Aug 07, 2011 | 2002 Buick Century

1 Answer

Leaking transmission fluid


TRANSMISSION FLUID LEAKS,CAN BE FOUND AROUND PAN GASKET.CHECK PAN GASKET,IF IT LOOKS WET AND YOU SEE FLUID DRIPPING AROUND THE EDGE OF OIL PAN, REPLACE PAN GASKET, WHILE YOU REPLACING PAN GASKET REPLACE TRANSMISSION FILTER WHILE OIL PAN OFF.IF TRANSMISSION OIL PAN NOT LEAKING, CHECK TRANSMISSION OIL COOLER LINES GOING INTO RADIATOR YOU WILL LOOSE A LOT OF FLUID THERE ALSO TORQUE SHAFT SEAL WILL CAUSE HEAVY FLUID LEAK WHILE ENGINE RUNNING CHECK OIL COOLER LINES AND LOOK AT THE TORQUE AREA WHILE ENGINE RUNNING YOU WILL SEE FLUID POURING WHILE ENGINE RUNNING THE OIL PUMP PRESSURE WILL PUSH FLUID OUT AT THE LEAKING AREAS.

Aug 01, 2011 | 1991 Nissan Stanza

2 Answers

My mechanic tells me there is engine oil in my radiator. 1997 Lumina. What could be the cause?


if it looks like light milk chocolate then its engine oil.
and then that means the head gasket is leaking oil into the coolant chamber.

if theres any orange or red color to it then the radiator is leaking tranny fluid into the coolant and then the radiator would be the troubles.



Apr 23, 2010 | 1997 Chevrolet Lumina

1 Answer

Oil pan removal 3.7


a lot tougher job than in the old days!

The engine oil pan is made of laminated steel and has a single plane sealing surface. The sandwich style oil pan gasket has an integrated windage tray and steel carrier. The sealing area of the gasket is molded with rubber and is designed to be reused as long as the gasket is not cut, torn or ripped

1.) Disconnect negative battery cable.
2.) Remove the radiator fan
3.) Remove the intake manifold you need to do this to install the engine support tool
4.) Install engine support Tool #8534 Do not raise engine at this time but make sure it is tight!
5.) Remove the structural cover
6.) Remove both left and right side engine mount through bolts
7.) Raise engine to provide clearance to remove oil pan.
8.) Drain engine oil and remove oil filter
9.) Remove the oil pan mounting bolts and oil pan.
10.) Unbolt oil pump pickup tube and remove tube and oil pan gasket from engine.

NOTE:Do not pry on oil pan or oil pan gasket. Gasket is mounted to engine and does not come out with oil pan.



reverse to install
do not over tighten bolts
follow normal torque sequence but here's a pic just in case
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Apr 05, 2010 | 2006 Jeep Commander

2 Answers

Coolant has oil in it. The fluid in the radiator is a brown color . What to do????


get it flushed out and replaced with new coolant but it looks like early signs of a head gasket starting to go .after flushing keep an eye on color if its the same brown color two weeks later you have a bad head gasket.

Feb 10, 2010 | 1995 Buick LeSabre

3 Answers

Why does the radiator fluid in my 1991 buick regal look like chocolate milk?


1-If you open your oil cap and seeing a milky stuff at the inside cap, then there is a leak in head gasket. coolant mixed with oil through head gasket leak then vaporize leaving the milky stuff at your cap. 2-If you don't see it then there is possible transmission get into water. When you are running, the pressure from transmission is higher than coolant pressure so it leaks into your coolant thru transmission cooling coil in the radiator. 3-Need to address this as soon as possible since chance of car not running in the middle of a trip is high also consequences of problems are more costly. Good luck.

Jul 12, 2009 | 1991 Buick Regal

2 Answers

Flushing the transmission


To change the transmission fluid make sure you have purchased: 1. filter with the o-ring 2. MOPAR ATF + 3 Type 7176, p/n 05010124AA fluid (I believe it took 6 quarts?) You are not changing the torque converter fluid so there will not be 12 quarts needed.). 3. Pan gasket. You should receive the new neoprene reusable pan gasket. This is because the recommendation is to change the transmission fluid every 25,000 miles. 4. There is a fluid additive to prevent foaming? Use it.


Raise the vehicle on a hoist. Remove the pan bolts. Remove the old gasket material with a plastic scraper. There could be metal transfer if you use a metal scraper. Clean the pan carefully. Clean the magnet that sits in the pan as it collects the minute metal shavings. If you see an excess of larger particles, you really should have the transmission inspected at a shop. Replace the filter carefully looking at its arrangement before removing. It took a second look to install a new filter because I did not watch how it was situated before removing. Use a thin coat of transmission fluid on the new pan gasket. Orient reusable gasket properly with bolt holes and assemble oil pan and gasket to transmission case. Tighten oil pan bolts to 19 Nm (165 in lbs.). CAUTION: DO NOT OVERFILL TRANSAXLE. DO NOT ADD OIL IF LEVEL IS BETWEEN: LOWER HOLES FOR WARM OIL (100?F). UPPER HOLES FOR HOT OIL (180?F.).

Jun 12, 2008 | Chrysler Neon Cars & Trucks

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