2021 Ram ProMaster 3500 Is Leaking Oil

Discovering the Causes of Oil Leaks in Your 2021 Ram ProMaster 3500 and How to Fix Them

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Reviewed by
Bo Fader
Written by RepairPal Car Genius
Updated January 14, 2025
0%
80% chance it's the
Oil System Components
0%
20% chance it's the
Engine Gaskets
The most common reasons a 2021 Ram ProMaster 3500 is leaking oil are oil system component failure and leaking engine gaskets.
  • Oil System Components: A worn or damaged oil pump or filter can lead to low oil pressure, resulting in inadequate lubrication and potential engine damage.
  • Engine Gaskets: A worn or damaged engine gasket can lead to oil or coolant leaks, resulting in engine overheating or loss of lubrication.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2021 Ram ProMaster 3500 is leaking oil?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

Oil pans don't wear out or break like other parts, they generally only need to be replaced because of external damage from an accident or an improperly tightened drain plug. The main symptom you will experience is an oil leak underneath the engine of your car. The oil that leaks from a damaged oil pan will range from dark brown to dark black. If the leak is large enough or occurs for long enough the oil level will be low enough to turn the oil pressure or low oil level warning light on.

The engine oil pressure warning light will come on if the engine oil pressure is low, or if the oil pressure sensor is faulty. In either case, engine power may be reduced significantly. The check engine light may also illuminate, and an on-board diagnostic (OBD) trouble code will be stored in the vehicle's computer.

What are the initial diagnostic steps to identify the source of the oil leak in a 2021 Ram ProMaster 3500?

When tackling an oil leak in your 2021 Ram ProMaster 3500, begin by locating the source of the leak. Inspect the underside of the vehicle for any visible oil drips or stains, which can help you pinpoint the area of concern. Next, check the oil level in the engine; a low oil level may indicate a significant leak that requires immediate attention. Pay close attention to the oil filter and drain plug, as these components are common culprits for leaks—ensure they are secure and free from oil residue. Additionally, examine gaskets and seals around the oil pan and valve cover for signs of wear or damage, as these can also lead to leaks. Don’t forget to inspect the oil pan itself for cracks or loose bolts, which can exacerbate the issue. Lastly, consider checking the Positive Crankcase Ventilation (PCV) system for any clogs or leaks, as these can contribute to oil leakage. If the source remains elusive, a pressure test of the oil system may be necessary to accurately identify the leak's location. By following these steps, you can effectively diagnose and address the oil leak in your vehicle, ensuring it runs smoothly and efficiently.

What are the common causes of oil leaks in a 2021 Ram ProMaster 3500?

When diagnosing oil leaks in a 2021 Ram ProMaster 3500, it's crucial to consider several common culprits that could be at play. One of the primary issues is a worn or damaged oil pan gasket, which can deteriorate over time and lead to significant leaks. Additionally, a faulty or improperly installed oil filter can also be a source of leaks, so it's essential to check that it is secure and functioning correctly. Another frequent cause is a loose or damaged drain plug; if this component is not tightened properly or has sustained damage, it can allow oil to escape from the oil pan. Furthermore, valve cover gasket leaks are common, particularly as the gasket ages, leading to oil seeping from the top of the engine. Lastly, don’t overlook the possibility of oil cooler line leaks, which can also contribute to oil loss. Addressing these issues promptly is vital to maintaining the health of your engine, and regular inspections can help catch these problems early, allowing for effective DIY repairs.

How urgent is it to address the oil leak in my 2021 Ram ProMaster 3500?

Addressing an oil leak in your 2021 Ram ProMaster 3500 is not just a matter of routine maintenance; it is an urgent issue that requires immediate attention. Oil leaks can significantly reduce your engine's oil levels, leading to inadequate lubrication, which can cause severe engine damage over time. Moreover, neglecting this problem can escalate into more serious complications, such as engine overheating or even catastrophic engine failure, which can be both costly and dangerous. Additionally, leaking oil poses a safety risk, as it can drip onto hot engine components, increasing the likelihood of a fire. By promptly addressing the oil leak, you not only protect your vehicle's performance and longevity but also ensure your safety on the road. Therefore, it is crucial to take action as soon as you notice any signs of an oil leak to prevent further damage and maintain the health of your Ram ProMaster 3500.

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2021 Ram ProMaster 3500 Leaking Oil: Causes & Repairs