7 Common Flashlube Catch Can Problems & Solutions

7 Common Flashlube Catch Can Problems & Solutions

What are the flashlube catch can problems? Flashlube Can problems may include leaking due to improper installation or faulty seals, overfilling leading to oil being pulled back into the engine, plugged lines causing malfunction, and vacuum leaks from poorly sealed connections, resulting in reduced engine performance. 

Additionally, installing a catch can may void the warranty on some vehicles, so it’s crucial to check the warranty manual before installation. 

Join us on this journey as we unravel the mysteries behind catch can complications and empower you with the knowledge to overcome them.

7 Flashlube Catch Can Problems & Solutions 

Here are 7 common Flashlube catch can problems and solutions:

1. Leaking

This is the most common problem with catch cans. The leaks can be caused by a number of factors, including a poor seal, a damaged can, or loose fittings. 

Solution: To fix a leak, first identify the source of the leak. If it’s a poor seal, tighten the fittings or replace the seal. 


2. Overfilling

If you overfill the catch can, it can leak or even explode. 

Solution: To prevent this, make sure to check the level of the can regularly and empty it when it gets full.

3. Plugged Drain

The drain valve on the catch can can become plugged with debris. This can prevent the can from draining properly and can cause it to overfill. 

Solution: To prevent this, clean the drain valve regularly. 

Plugged Drain

4. Rust

 If the catch can is made of metal, it can rust over time. This can damage the can and make it more likely to leak. 

Solution: To prevent rust, keep the can clean and dry. 

5. Freezing

If you live in a cold climate, the catch can can freeze in the winter. This can damage the can and make it more likely to leak. 

Solution: To prevent freezing, insulate the catch can or drain it before the weather gets cold.

6. Vacuum Problems

Some catch cans have a vacuum line that helps to remove crankcase vapors. If the vacuum line is blocked or damaged, it can cause the catch can to not function properly. 

Solution: To fix this, check the vacuum line for blockages or damage and repair or replace it as needed. 

7. Evaporative Emissions

Some catch cans can release evaporative emissions into the atmosphere. This can be a problem if you live in an area with strict emissions regulations. 

Solutiona: To prevent this, look for a catch can that is closed loop or has a vapor separator. 

Read More Troubleshooting: Car Losing Oil With No Leak Or Smoke

Flashlube Catch Can Flow Rates

According to data extracted from an independent test report conducted by Curtin University/Perth, it is evident that the Flashlube Catch Can Pro exhibits flow rates surpassing 230 liters per minute. 

Flashlube Catch Can Flow Rates
Flashlube Catch Can Flow Rates

How Does The Flashlube Catch Can Pro Work?

Here’s a breakdown of the process:

  • Blow-by gasses enter the catch can: The gasses are routed from the crankcase to the catch can through hoses that are typically connected to the positive crankcase ventilation (PCV) valve and/or another source of crankcase pressure.
  • Flashlube Catch Can Pro
  • Gases are separated: Inside the catch can, the gasses are forced to change direction abruptly. This helps to separate the heavier oil mist and moisture from the lighter air.
  • Oil mist and moisture collect in the can: The oil mist and moisture collect in the bottom of the can, where they can be drained periodically.
  • Clean air exits the can: The cleaner air exits the can through a filter and is then returned to the intake system.

What Are The Benefits Of An Oil Catch Can?

Here are some benefits of using an oil catch can:

1. Prevents Carbon Buildup

An oil catch can help prevent the buildup of carbon deposits by capturing the oil vapors before they reach critical engine components.

2. Reduces Engine Sludge

Sludge can clog passages, hinder lubrication, and negatively impact engine performance. By intercepting these vapors, the catch can keeps the engine internals cleaner and more efficient.

3. Protects Turbochargers and Intercoolers

An oil catch can helps to separate and collect this oil, preventing it from entering the turbocharger or intercooler.

4. Improves Fuel Efficiency

By reducing carbon buildup and maintaining a cleaner engine, an oil catch can contribute to better fuel efficiency. 

5. Enhances Engine Longevity

Reduced wear and tear on critical components, as well as improved lubrication, can extend the lifespan of the engine.

6. Maintains Positive Crankcase Ventilation (PCV) System Functionality

An oil catch can can complement the PCV system by preventing excessive oil from being recirculated into the intake manifold. 

7. Reduces Oil Consumption

By capturing and recycling oil vapors, an oil catch can help in reducing oil consumption. 

Flashlube Catch Can Replacement Cost

Here’s a table summarizing the estimated costs:

Catch Can ModeCostReplacement FilterCostLabor CostTotal Cost
Universal $100Standard Filter$30$50-$100$180-$230
Catch Can Pro$150-$200Pro Filter$50$50-$100$250-$350
Xtreme Catch Can$200+Xtreme Filter$75$50-$100$325+
Flashlube Catch Can Replacement Cost

Flashlube Catch Can Filter

Here’s a breakdown of the most common ones:

1. Standard Filter

Standard Filter
  • This is the most basic filter option, typically included with the Flashlube Universal Catch Can.
  • It’s made of paper and designed to capture larger particles of oil mist and moisture.
  • It needs to be replaced every 3,000-5,000 miles or more frequently under dusty driving conditions.

2. Pro Filter

Pro Filter
  • This is a higher-performance filter option, available for models like the Catch Can Pro and Xtreme.
  • It’s made of a synthetic material that provides better filtration efficiency and longer lifespan than the standard filter.

3. Xtreme Filter

 Xtreme Filter
  • This is the highest-performance filter option, designed for the Xtreme Catch Can.
  • It’s made of a high-flow synthetic material that offers the best filtration efficiency and longest lifespan.
  • It’s recommended to be replaced every 10,000-15,000 miles.

Read Also Oil Catch Can With Breather Or Without

Flashlube Catch Can Fitting Instructions

Here are the general steps for installing a catch can:

Flashlube Catch Can Fitting Instructions

Step 1: Locate the PCV System

Identify the Positive Crankcase Ventilation (PCV) system in your vehicle.

Step 2: Select Installation Location

Choose a suitable location to mount the catch can. This is typically along the PCV hose or close to the engine. Make sure it’s easily accessible.

Step 3: Remove PCV Hose

Disconnect the PCV hose from the engine. You may need pliers or screwdrivers to loosen clamps securing the hose.

Step 4: Install Catch Can

Connect one end of the catch can to the PCV valve or hose coming from the crankcase. Connect the other end to the intake manifold or air intake system.

Step 5: Secure Connections

Use hose clamps to secure the connections between the catch can and the PCV system. Ensure a tight and leak-free fit.

Step 6: Route Hoses

Carefully route the hoses from the catch can, ensuring they don’t kink or bend excessively. 

Step 7: Secure Additional Connections

If your catch can kit includes additional connections or hoses, follow the manufacturer’s instructions to install them properly.

Step 8: Tighten Everything

Double-check all connections and hose clamps to ensure they are tightened securely. Loose connections can lead to oil leaks.

Flashlube Catch Can Problems Pcv

Potential Problems

  • Improper Installation: Incorrect installation can lead to vacuum leaks, affecting engine performance and potentially causing damage.
  • Overfilling: If the catch can fills up excessively, it can become pressurized and force oil back into the engine, defeating its purpose and potentially causing harm.
  • Freezing: In cold climates, moisture collected in the catch can can freeze and block the system, leading to crankcase pressure buildup and potential engine damage.
  • PCV System Disruption: Modifying the PCV system for a catch can installation can introduce issues if not done correctly. 

Flashlube Catch Can Reviews

The Flashlube Catch Can Pro safeguards the engine by filtering harmful oil mist and condensation from the incoming air, preventing carbon buildup, loss of power, and potential engine damage. Compact at 146x116x137mm, it features safety valves to prevent over-pressurization.

Flashlube Catch Can Reviews
Flashlube Catch Can Reviews

Pajero Flashlube Catch Can

The Pajero Flashlube Catch Can is an aftermarket accessory designed to trap and collect oil and contaminants from the crankcase ventilation system, preventing them from entering the engine intake.

Flashlube Catch Can Pro Problems

  • Leaks: Some users report issues with the Flashlube Catch Can Pro leaking oil.
  • Installation Challenges: Certain installations may pose challenges, leading to difficulties for users.
  • Durability Concerns: Some users express concerns about the long-term durability of the Catch Can Pro.
  • Maintenance Hassles: Users find the maintenance process cumbersome in some cases.
  • Compatibility Issues: Compatibility problems with specific vehicle models are reported by some customers.

Flashlube Catch Can Vs Provent

Below is a simple comparison table between Flashlube Catch Can and Provent:

FeatureFlashlube Catch CanProvent
PurposeOil catch canOil separator
InstallationEasy to installEasy to install
Filtration EfficiencyVaries based on modelHigh efficiency filtration
MaintenancePeriodic cleaning requiredElement replacement needed
MaterialAluminum or plasticPlastic and metal construction
CapacityVaries based on modelTypically 200-300 ml
Mounting OptionsVarious mounting optionsVarious mounting options
CompatibilityCompatible with various vehiclesCompatible with various vehicles
PricePrice varies based on modelPrice varies based on model
Flashlube Catch Can Vs Provent

Read More About 7 Surprising Engine Oil Treatment Benefits

Flashlube Catch Can Filter Replacement


  • Park your car on a level surface and let the engine cool completely.
  • Locate your Flashlube Catch Can. It’s usually mounted near the engine valve cover.
  • Place the oil drain pan under the catch can.
  • Open the drain valve (if equipped) and allow the collected oil to drain completely.
  • Use the socket wrench or screwdriver to loosen the filter housing.
  • Carefully remove the old filter element and dispose of it properly.
  • Wipe the inside of the filter housing clean with a rag.
  • Install the new filter element, making sure it’s seated properly.
  • Tighten the filter housing back on.
  • Close the drain valve (if equipped).
  • Check for any leaks and ensure everything is tightened securely.

What Happens If Oil Catch Can Is Full?

Here’s what can happen:

1. Reduced Efficiency

When the catch can is full, it may no longer effectively separate oil and contaminants from the air. This can result in a reduced efficiency of the crankcase ventilation system.

2. Increased Engine Wear 

If contaminants, including unburned oil, make their way into the combustion chamber, they can contribute to increased engine wear. 

3. Performance Issues

Accumulation of oil and contaminants in the intake manifold can lead to carbon buildup on valves and other engine components. 

4. Emissions Impact

The effectiveness of the emissions control system may be compromised if oil and contaminants enter the combustion chamber. This can result in increased emissions, potentially causing a vehicle to fail emissions tests.

5. Potential for Hydrolock

Hydrolock occurs when a significant amount of liquid enters the combustion chamber, preventing the engine from 


How does the Flashlube Catch Can Pro work?

The Flashlube Catch Can Pro separates oil vapors from crankcase ventilation, enhancing engine performance by preventing carbon buildup and maintaining optimal combustion.

Can a catch can damage your engine?

When properly installed and maintained, catch cans prevent engine damage by reducing oil contaminants. Incorrect installation or neglect, however, may cause issues like increased crankcase pressure.

How much oil does a Flashlube Catch Can take?

Flashlube Catch Can Pro capacities vary, typically ranging from 200ml to several liters. The specific model’s documentation provides information on its canister capacity.

Are Flashlube Catch-Cans really bad?

Flashlube Catch-Cans, like others, can be beneficial when correctly used. Opinions may vary, so following the manufacturer’s guidelines ensures effective engine maintenance and performance.

What happens if a catch can overflows?

Catch can overflow may lead to oil re-entering the intake, causing carbon deposits and efficiency issues. Regular maintenance, including timely emptying, prevents potential engine damage and hazards.

YouTube video


Hope now you know everything about flashlube catch can problems. So now your duty is to make an informed decision based on the information provided. While the Flashlube catch can has been designed to address various issues related to oil and gas contaminants in the engine, there have been reported problems and concerns.

*This post contains affiliate links. That means that if you make a purchase after clicking on a link I may earn a small commission at no extra cost to you. As an Amazon Associate, I earn from qualifying purchases.” Click here for more Info.

Similar Posts