My car is leaking a lot of engine oil, I parked my car over night and when I came out to move it the next day, there was a large oil puddle on the ground, is there a way to find out where its coming from?
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Re: leaking engine oil
Jack up the car and look underneth it , if it is a large amount it is probaly a front or main seal and a lot of work, if it is a small amount you need to tighton the oil pan the bolts tend to come lose overtime and need to tight
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loose rocker cover gaskets
crank shaft oil seals front and rear main
sump gasket or loose oil pan
over full and coming from dip stick tube
loose /damaged oil filter /gasket
Park the car run the engine , let it sit over night
start in the morning and see where the oil mark is on the floor and the leak will be above that spot when it was parked
Get the oil changed. You don't want water or coolant mixed with the oil as it will turn the oil milky and is not supposed to be mixed with oil.
Since you're always adding coolant - it must be leaking somewhere. This is not good. Hopefully, it is just a leak from a hose or similar ($). Look at the ground where you park. If it is spotty with marks - it may be dripping over night. Park in an area that is clear of these marks - or slide a large piece of cardboard under the engine over night. That way you can see if you have a leak dripping on the ground or cardboard. If it is not showing up over night - it could be a bigger deal.
It could either be a leak thru a cracked engine block ($$$ - $$$$) or gasket ($$) into the engine oil (changing it out with fresh oil will tell you if it is leaking into the oil if it turns milky in color) or into one of the cylinders and is mixing with gas while the engine is running. When this happens, the water is super heated and appears as white smoke - but is really just steam - at the exhaust pipe.
This is going to cost a few bucks to fix - but it could also be a game changer as far as whether you fix the car and fix it or sell / trade for another depending on whats wrong and how much the car is worth.
yuo can get oil leaks from many areas , i would suggest getting the entire engine and gearbox pressure cleaned then park on a piece of cardboard and then you will be able to locate the leak easier, as its a large oil leak i would suspect it will be some where around the sump gasket ,crank shaft seals,cam shaft seals for example, but will need the engine clean to really identify the area good luck
I could not say for certain, but I would guess that the rubber gasket on the oil filter is warping and losing it's seal as the temperature changes. If your avalanche is equipped with an external oil cooler, then the o-rings and gaskets for the remote fittings may be doing the same. I would recommend getting a bottle of engine oil dye from the parts house and letting it run for a while. With this alternative however you will need a U.V. light source to detect the dye and the leak.
the best way to locate the oil leak, if you can't see where it is coming from is to park the car overnight , and put a large piece of cardboard under the engine, so where the oil leak is, it will drop onto the cardboard, then the next day, look under the car, and see where the oil is on the cardborad, the leak should be in the area of where it is on the cardboard. also, the leaks could be anything from the oil pan gasket, oil sending unit, valve covers, intake manifold gasket. or the rear main seal. hope that this information was very helpful to you.
have you replaced the oil sending unit. and check the wire to it, and also i would give the engine a oil pressure test while the sending unit is out, if you have good oil pressure then, i wouldn't worry about oil pump, i would still consider replacing the oil sending unit.
Hello Mark. The next most common thing I would look into here is the oil pressure sensor. They sometimes pull apart and leak at the seam. Your 2 liter engine has it's sensor on the top left side of the cylinder head. If the concentration of oil seems to be on the top side of the engine a valve cover gasket may have cracked. A severe leak will often wash dirt off of an engine so look for an oil washed area. If nothing apparent it may be a good idea to give your engine a quick cleanup to help you find the leak as oil can travel a long way on an engine. Hope you find the source OK. Thank you for using FixYa!
Their is a huge difference between leaking and using oil. place a large piece of carboard under the car one night and see if their is a lot of oil on the carboard the next moring. If so, try to look under the car and see if you can tel where the oil is coming from. Have the leak fixed. It might be as simple as loose bolts.
If the engine is consuming oil because it has high mileage the use regular 10w40 or even
20w40 if you are in a warmer climate. If it is using oil you cannot afford to use the high priced synthetics. These are for relitively new cars .As it uses oil just replace it with the regular 20-w40 or 10w40. To slow down consumption use STP or MOTOR HONEY.or some other oil thickening agent on the market made for worn engines.