What causes an engine oil leak?

Oceanside Motorsports • December 1, 2023

The occasional engine oil leak is a frequent enigma that many drivers meet when driving their car, just like any other well-traveled acquaintance. The tiny puddles that are left behind are like a covert dialog between your engine and the pavement. Nonetheless, do not worry, we will be solving the common causes of this car riddle in this blog.

As we explore the common factors that may be causing your engine to lose its valuable oil, come along for a look under the hood. We’ll go over the simple causes of this common occurrence that many drivers experience, from worn-out components to the effect of time and distance driven.

An engine oil leak can occur for various reasons, and identifying the source is crucial to prevent potential damage to your vehicle’s engine. Here are some common causes of engine oil leaks:

  1. Worn or Damaged Gaskets and Seals : Over time, the gaskets and seals that help keep engine oil contained can wear out or become damaged. This includes the oil pan gasket, valve cover gasket, camshaft seals, and crankshaft seals.

  1. Loose or Damaged Oil Drain Plug : The oil drain plug is used to drain oil during an oil change. If it’s not properly tightened or if the threads are damaged, it can lead to oil leaks.

  1. Oil Filter Issues : A poorly installed or damaged oil filter can result in oil leaking from the filter housing. Make sure the oil filter is correctly installed and that the rubber gasket is in good condition.

  1. Cracked or Damaged Oil Pan : The oil pan, located at the bottom of the engine, can be damaged by hitting objects on the road or by corrosion. A cracked oil pan can lead to oil leakage.

  1. Faulty Valve Cover Gasket : The valve cover gasket seals the gap between the valve cover and the engine. If it becomes brittle, worn, or damaged, oil can escape.

  1. Oil Cooler Seal Leaks : Vehicles equipped with oil coolers may develop leaks around the seals, leading to oil escaping from the cooling system.

  1. Failed Rear Main Seal : The rear main seal is located at the back of the engine, and if it fails, it can allow oil to leak from the crankshaft area.

  1. High Oil Pressure : Excessively high oil pressure can cause gaskets and seals to fail, leading to leaks. This could be due to a malfunctioning oil pressure relief valve or other issues with the lubrication system.

  1. Corrosion or Rust : Rust or corrosion on the engine components, especially in areas prone to salt or moisture, can weaken seals and cause leaks.

  1. Poorly Fitted or Damaged Oil Filler Cap : The oil filler cap seals the opening where oil is added to the engine. If it’s damaged or not properly fitted, it can contribute to oil leaks.

If you notice oil spots under your parked car, low oil levels , or the smell of burning oil while driving, it’s essential to address the issue promptly. Regularly checking your engine for signs of leaks and performing routine maintenance can help prevent and identify problems before they become more severe. If you’re uncertain about the source of the leak, consulting with a qualified mechanic is advisable.

Repair and Maintenance at Oceanside Motorsports

For over 12 years, Oceanside Motorsports has been an Oceanside staple helping you get back on the road faster than the dealer can. We have continuously trained technicians and offer a lifetime warranty on most repairs. With our Time Saver Service, we can get your car and deliver it to your doorstep once fixed. We can even help arrange to tow if needed. You can also have our loaner cars for just $10 per day while your car is serviced! You’ll get used to expecting quick, simple, and dependable auto repairs from Oceanside Motorsports!

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