New answers tagged

0

In my experience it is completely possible since powerful BMW engines consume a lot of engine oil. I have a 2014 X5 50i (4.4 L V8) and every 2000 miles or so I need to add 2 quarts of oil. Dealer told me about this before hand so you shouldn't worry about it. Even they have told me that M series cars require oil top-up every 1000 miles or so. This is due to ...


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You can run into a few problems with over-filling your engine oil. It depends on how much you overfilled your oil pan. A half a quart over is ok. If you put an entire quart or more over, this could be a real problem. When you over-fill to that extent it can cause issues with gaskets being subjected to pressures they were not designed to be subjected to. ...


2

In most engines the surface of the oil in the oil pan is close to the crankshaft. If the oil is overfilled to the point that the crankshaft hits the oil, it can cause the oil to form foam. This will in turn decrease the efficiency of the oil pump, which will be pumping a mixture of air and oil. This means that parts that depend on the oil pump for ...


1

According to the owner's manual, it depends on the climate you live in: +----------------------------------+------------------------------------+ | Climate | Oil Grade | +----------------------------------+------------------------------------+ | Hot (ABOVE 32°F OR 0°C) | SAE 20W-40, SAE 20W-50 ...


0

The question I could do myself would be if that oil on radiator could'nt be the consequence of a damaged head gasket which pours oil from lubrication system to the cooling one (then, the guys could have improvised along the way any bad or worse excuse). Of course, I've purchased 4 2nd hand cars, and I would have rejected any candidate which had oid in the ...


-1

Oil is oil, some people care too much about synthetic, but unless ur driving a car that's 5years old or newer who cares. I'm driving a 93honda and it drinks 2L per fill, Bad I know but that's like 800-1000km and the thing is 22years old with 388,000km. It will improve when I get a new distributor but last I checked, I'm still a broke student


9

In very cold climates there are electric heaters that replace the dip stick. They are plugged into an AC outlet and because they reach the oil pan they can apply heat directly to the oil. That way the oil doesn't get cold to the point where it totally looses it's ability to keep your engine protected at start up. It's plugging in that electric heater that ...


0

There is a popular process to get just about all the oil and sludge out of an engine. Though it is usually done after engine disassembly. You soak the dirty engine pieces into a hot tank of sodium hydroxide (lye) solution and other cleaning agents. The liquid will chemically react with the oils in the engine and remove it in the process.


1

As oil has a higher viscosity than water, I think it could damage the water pump because it would put more stress on it. Also, the oil would flow slower than water and this could lead to overheating of the engine.


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Have into account two factors: oil viscosity may be much or very much higher than the antifreeze fluid (glicol-polipropylene derivates) normally used: the radiator grille has capilare-thickness tubes and an hydraulic circuit (pump, filter, reservoir...) prepared for much less viscosity. Furthermore, the oil will becoming more and more viscose while the ...


3

Strange - engine coolant is antifreeze diluted with water. So the seller is claiming he had oil but not water? I would not buy that car. For the seller, a coolant system flush would in order, both forwards and reverse, and then refill with antifreeze and clean water. If engine oil still appears in the coolant water then the oil is moving from the oil ...


10

Yes, it's possible some of the seals designed to withstand water and glycol could get damaged I am thinking you are creating a fictitious scenario here, so I'll roll with it. If you filled your radiator with oil and started your car and let it run for awhile I would be most concerned with damage to seals that were designed to withstand water and glycol. ...


1

I consider it quite more likely that it was the engine that had been putting oil into the coolant. Of course, it may also be that the seller poured some obvious additional oil on top in order to mask the defective motor seal, a very expensive defect to fix.


21

The seller should not be selling the vehicle with oil in the cooling system. That supposed "quick fix" should have been rectified at the earliest opportunity. Have him flush the cooling system and put another few tens of kilometers on the odometer before you even consider such a vehicle. If the seller is topping off the radiator with oil instead of water, ...


22

I would be more concerned about whether engine oil is actually finding its way into the radiator from the engine. If it is, this would be indicative of a compromised head gasket, warped cylinder head, or damaged oil cooler (if the car uses radiator coolant for cooling the oil). The first two items are not trivial to replace or fix. The third one isn't far ...


1

I had the same problem and I replaced the DRI er side valve cover the OEM cover has a round hole about e the lifter which squirts oil into your pcv and suck into your intake. The new modified valve cover mover the hole and uses lips around the square hole to divert the oil away from your PVC intake. The pcv intake on my Silverado is a fixed orifice on the ...


0

Those compression readings are too unbalanced and 3 of 4 are too low, even for a worn engine. Your only options are returning the vehicle or getting the seller to pay for a full rebuild. If they will not do either, get a lawyer.


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No. As far as I can tell, there is no reason that Vaseline might gradually degrade the rubber O-ring on which it has been applied. O-rings that are manufactured for automotive purposes do tend to be made in a rather durable fashion so as to be able to withstand whatever sort of fluids that might accidentally get spilt during car maintenance. If you are ...


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tl dr - Have no fear of Vaseline and o-rings O-rings are made out of many different materials. I would suggest that those o-rings which are made to work in the automotive realm are made to be resistant to things such as oil, gasoline, and other petroleum products. This would include Vaseline. While Vaseline and other petroleum products may degrade real ...


13

You Asked What are the benefits of a dry sump? Simply put a wet sump crankcase has oil sitting in the bottom of the crankcase. It's affected by various forces as the car or motorcycle is driven. At times it is possible, during hard braking or cornering, that the oil pickup is not in oil, resulting in a low or no oil pressure condition that could ...


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An addition to the previous answers: A limiting factor in car construction is the engine height. Using a dry sump setup the engine gets smaller in height and can be located lower. This lowers the car's center of gravity resulting in a better track performance.


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Dry sump oiling systems are primarily used in racing situations. The main purpose is it will provide oil pressure under any type of hi-G maneuvers, to include cornering, braking, and acceleration. A dry sump oiling system is made up of several parts. The reason why it is called a "dry sump" is because the sump, where in a normal engine is the reservoir for ...


4

Oil pumps are always mechanical pumps as they are cheaper to produce than electrical pumps and more reliable as they are driven directly by the crankshaft. A running engine needs sufficient lubrication. By using a directly connected mechanical pump only a few possibilities of a pump failure remain. However, some cars are equipped with an additional electric ...


5

Per Wikipedia. https://en.wikipedia.org/wiki/Dry_sump A dry sump offers many advantages.[1] The most obvious are increased oil capacity afforded by the remote reservoir, and the capability to mount the engine lower in the vehicle because of the lower sump profile—lowering the overall center of gravity. The external reservoir can also be relocated to ...


5

There are quite a lot of different fluids inside a modern car. I tried to group them by purpose. Hydraulic Fluids General use: Hydraulic fluids are used to transfer power from one point to another Brake Fluid - Based on glycole-ether, mineral oil or silicone oil. Brake fluids are designed to have high boiling points because the brake system is subject to ...


1

I've worked at automotive dealerships for over 30 years. Bearings are made of soft metals such as copper and babbitt so that they will not damage crank journals if contact is made. In earlier days, having coolant in the oil was an inconvenience. You may want to run a few quarts of ATF through an engine, then change the oil twice, in quick succession. Over ...


1

The real answer is- it depends. An extra couple of quarts? Probably no real effect. If you put in enough that the crank is sloshing the oil around, you probably will get a foam of oil all around the underside of the pistons, but besides robbing a bunch of horsepower due to windage and maybe causing some oil burning issues (at a certain point your oil rings ...


9

Depending on the car model and the technology used, not all fluids I mention here do exist. Here is list of all that I know of: fuel (some cars use two typed of fuel, e.g., petrol and gas, so they have two fuel tanks) engine oil two-stroke oil (in some systems the oil is separated and only combined in the injection) gear oil Automatic Transmission fluid ...


1

It's not good. The little oil you have left will overheat & degrade as others have explained better. With your oil level really low like that, as long as the engine isn't overheating yet, you might be able to get the car to lug itself 5 or 10 miles to a shop to get more oil w/out problems, but it's already really pretty harsh on the car Basically, your ...


2

Your piston rings are worn. This is allowing oil into the combustion chamber so it's being burnt off... Typically accompanied by a sweetish smelling exhaust and heavy gas smell in oil itself. And the reason you didn't need to step on the gas when the compression was checked is because the spark plugs shouldn't of been working... This it wouldn't have helped ...


5

With way too much engine oil in the engine, the problem is that the crankshaft can hit the oil in the bottom of the crankcase when the engine is running. Since the crankshaft is spinning fast, even at idle, each time it slaps the surface of the oil, it will create some bubbles in the oil as the air just behind the spinning crankshaft lobe gets dragged under ...


3

If an engine is that full, it will pump oil through the PCV system into the intake manifold. Piston rings, even in a fresh engine, always have at least a minimal amount of blow-by from combustion. Normally these combustion products pressurize the crankcase slightly and then vent through the PCV (Positive Crankcase Ventilation) system into the intake. ...


1

It's more likely that you (Cooked) the sender unit for the oil gauge. Making it read improperly. Heat can damage alot of things on a motor. Also most later model cars have a (Low) pressure safety threshold. (ie) if the oil sensor is cooked and does not register enough oil pressure at turn over' The car will never start. This is easy to see on a functioning ...


0

What you are hearing is a defective VTC actuator, which in part controls the oil pressure. It is defective in 10"s of thousands of Honda 4 cylinder engines built between 08 and 13. It is mentioned in Honda TSB 09-010. Honda will not fix this problem. The cars with this issue are worth very little in trade, and the defect may eventually lead to engine failure ...


4

Simple And Technical Definition Of Coolant From a technician's standpoint "engine coolant" would be referring to the 50/50 mix of ethylene/polypropylene glycol and water. From an engineers standpoint engine coolant would TECHNICALLY be anything that assists the system in the cooling process. So, in this case you could refer to the fans, oil, and Anti-freeze ...


1

Without oil to lubricate, metal on metal surfaces begin to heat up from friction. The extra heat causes the metal to expand. When it expands enough, some part of the engine will try to stop moving, but the other parts may not stop yet because of momentum or power, causing bends and breaks of internal engine parts. When oil is too low, the oil pump might ...


4

I can answer this because it has happened to me a few times. There are several different possibilities depending on the ambient temperature and how old the engine is. Here are three real scenarios that have happened with my 1996 Volvo 850: (1) When the oil gets low the first thing you might notice is more noise. Oil muffles the engine, so when oil gets low ...


1

Gap between cylinder and engine core is really really small. This gap is filled with oil under normal circumstances, allowing cylinder to "slide" in its container. When you run out of oil, friction between cylinder and its container increases a lot, causing high wear. When car runs without oil, friction between cylinder and its container generates a lot of ...


2

The engine will likely seize up. This happened to me with a lawnmower once. I tried to mow the lawn after dad drained the oil, but before he filled it. It ran for a few minutes, then stopped as if the blade had hit something hard, but without the sound of the blade hitting something. We got very lucky, and were able to start it up after adding oil and ...


3

You asked What actually happens inside the engine to cause it to function incorrectly at higher temperatures? Response One of the many ways that engines fail due to high temperature is the increased diameter of a piston due to the heat. As you have noted heat will make things get bigger. In a situation where an engine seizes due to heat the OD ...


5

Disclaimer: I work with an older 202 straight 6 Holden engine in a landrover, so my perspective is somewhat vintage. However the basic underlying concepts are the same. Cause: Low oil in the oil pan, at the very bottom of the engine. Normally the oil should read right on the Full line on a dipstick, when the vehicle is level and the motor is cold and has ...


3

The entire lubrication system for the engine fails, leading to scratching of the cylinders and the barrels, after which point they dont run smoothly and degrade much faster. the pistons are made of aluminium and the cylinders have a special tough glassy coating so they screatch very easily and when the engine is too hot the aluminium deforms and heats in a ...



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