Being owner of a vehicle is fundamental, we most of the time need it to get to our job and for most of our daily trips. This important portion of our annual budget frequently causes us complications, being aware about oil leaking on your car is one of them… In actual fact, an oil leak is almost never harmless and can quickly lead to the breakage of your engine if you don’t notice it. If you are aware about oil leaking on your Bmw Serie 3 E90, you have come to the right place, we will first help you to locate the cause of the oil leak and, secondly, we will help you to fix it, whenever possible.

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Identifying the origin of the oil leaking on your Bmw Serie 3 E90

If you see fluid leaking from under your Bmw Serie 3 E90, the first thing to do is to check all of your levels (power steering, engine oil, brake fluid, coolant) to discover if any of them can fairly quickly be defined as the source of the leak. To limit the risks, it is definitely fundamental to check your levels every 2 weeks to prevent any risk of engine breakage.
In our circumstance we will only be interested in circumstance you identify oil leaking from your Bmw Serie 3 E90, as far as engine oil is concerned, the liquid will be quite viscous and in shades of brown to black and if it is gearbox oil, it will be rather in amber tones and will have a strong unpleasant smell.
It’s not constantly easy to locate the cause of the oil that leaks on a Bmw Serie 3 E90 because of the room in the engine block, even so here are the steps to stick to to locate the source of the oil:

  • Find the point where the oil falls, the area from which it spills onto the floor…
  • Go back up the route of the dripping oil to its start, if the blot is too important, don’t be reluctant to clean the engine block and drive to be capable of situate it more quickly.
  • That will help, here is a list of the parts that in most cases cause oil to leak from a car: the drain plug and its seal; one of your crankcase gaskets; the oil pressure switch; the oil filter; the transmission drain plug; the transmission sealing rings.

Whenever possible, repair the part that generated the oil to leak on your Bmw Serie 3 E90.

Now that you’ve determined the cause of the oil leaking, it’s time to get down to business. Obviously, for a while, you’ll be able to add more oil to top up the level, depending on its severity, but take note that this is not a durable remedy and that the leak could become worse at any moment. We are likely to reveal you the repairs that we think you can carry out alone with some knowledge, tools and depending to the accessibility that you are going to have on your engine. No matter the reason, you should know that after repairing an oil leak on a Bmw Serie 3 E90, you will have to change your engine or gearbox oil.

Oil leakage from the drain plug and its seal on Bmw Serie 3 E90

In this scenario, the methodology is quite easy, you just have to lift your Bmw Serie 3 E90, if it is possible totally horizontal, remove your drain plug, drain your engine oil, change your drain gasket, tighten the plug to the right torque and check the hot engine to make sure the leak has been repaired.

Oil leaking over from the oil filter of my Bmw Serie 3 E90

In the case that your oil leak comes from your oil filter, you will simply need to replace it. To do this, take a filter wrench, remove the old filter, being sure that the gasket does not stick to the engine, set the new filter and tighten it moderately. Same check, hot check if oil is leaking from your Bmw Serie 3 E90.

Oil leaking from the pressure switch of my Bmw Serie 3 E90

Finally, if it is your pressure switch that is the reason of your leak on your Bmw Serie 3 E90, you can, determined by its accessibility, reach it and change it easily. To get this done, set a drain tray under the part, disconnect the electrical wire, remove the part, quickly reposition the replacement pressure switch, clean the whole thing and do a hot check to make sure that you no longer have any oil leaking from your Bmw Serie 3 E90.

For any other type of leak, we suggest you to go to your mechanic because the repair needs too much knowledge and tools to be undertaken serenely alone.

If perhaps you have any further questions about the Bmw Serie 3 E90, do not hesitate to consult our Bmw Serie 3 E90 category.