Can I Put Plus Gas In My Car? | Fuel Additive Facts

Adding ‘Plus Gas’ to your car’s fuel tank is not recommended; it’s a penetrating oil for seized parts, not a fuel system additive.

We’ve all been there, standing in the garage, looking at a can of something helpful, wondering if it could solve a different problem. It’s natural to think a product designed to free up stuck metal might also help your engine run smoother.

Let’s talk about “Plus Gas” and its place in your vehicle maintenance routine. While it’s a fantastic tool for specific tasks, your fuel tank isn’t one of them.

What Exactly Is “Plus Gas”?

“Plus Gas” is a well-known brand of penetrating oil. Its primary job is to loosen rusted or seized mechanical components like nuts, bolts, and fittings.

It works by having a very low surface tension, allowing it to creep into tiny crevices and break down rust and corrosion.

This product contains a blend of petroleum distillates, solvents, and lubricating agents. These components are perfect for freeing metal parts but are not designed for combustion or your car’s delicate fuel system.

Why “Plus Gas” Doesn’t Belong in Your Fuel Tank

Your car’s fuel system is a precisely engineered network. It’s designed to deliver a specific type of liquid—gasoline—in a finely atomized mist into the engine’s combustion chambers.

Introducing a penetrating oil like Plus Gas disrupts this delicate balance. The chemical makeup of Plus Gas is fundamentally different from gasoline.

Here’s what happens when you introduce it:

• Fuel Pump Strain: Your fuel pump is calibrated for gasoline. A thicker, less volatile substance can make it work harder, leading to premature wear or failure.
• Filter Clogging: Plus Gas contains lubricants and other compounds not meant for filtration by a fuel filter. These can quickly gum up the filter, restricting fuel flow.
• Injector Damage: Fuel injectors are tiny, high-precision nozzles. Plus Gas can clog them, alter their spray pattern, or even cause permanent damage, leading to poor engine performance.
• Improper Combustion: Plus Gas does not burn cleanly or efficiently like gasoline. It can cause incomplete combustion, leading to carbon deposits on spark plugs, valves, and piston crowns.
• Catalytic Converter Harm: Unburned or improperly burned components from Plus Gas can reach your catalytic converter. These substances can contaminate and damage the catalyst, rendering it ineffective. Federal emission standards, enforced by agencies like the EPA, make catalytic converter health vital.
• Sensor Contamination: Oxygen sensors, which monitor exhaust gases, can become fouled by the residues from Plus Gas. This leads to inaccurate readings and poor engine management.

Think of it like this: you wouldn’t put motor oil in your coffee maker, even though both are liquids designed for specific machines. Each fluid has a distinct purpose and chemical composition.

Can I Put Plus Gas In My Car? – The Risks to Your Engine and Wallet

The short answer is a resounding no. Adding Plus Gas to your fuel tank creates a cascade of potential problems. These issues can range from minor annoyances to major, costly repairs.

Here are some of the specific risks:

• Engine Misfires: Clogged injectors or poor combustion will cause the engine to misfire, leading to rough idling and reduced power.
• Reduced Fuel Economy: An inefficient burn means your engine uses more fuel to produce less power.
• Check Engine Light: Fouled oxygen sensors or catalytic converter issues will trigger your check engine light. This indicates a problem requiring immediate attention.
• Expensive Repairs: Replacing a fuel pump, injectors, or a catalytic converter can cost hundreds to thousands of dollars. These repairs are far more costly than the perceived benefit of using Plus Gas as a fuel additive.
• Warranty Voidance: Vehicle manufacturers specify approved fuel types and additives. Using an unapproved substance like Plus Gas can void your powertrain warranty.

Understanding the symptoms of fuel contamination is helpful. If you suspect an issue after adding something incorrectly, these signs often appear quickly.

Symptom	Potential Cause
Rough Idling	Clogged injectors, poor combustion
Engine Stalling	Fuel starvation, severe misfires
Reduced Power	Inefficient fuel delivery, fouled components
Check Engine Light	Sensor errors, catalytic converter issues
Strong Exhaust Odor	Incomplete combustion, unburned fuel

Understanding Fuel System Additives: The Right Stuff

If you’re looking to maintain your fuel system, there are many legitimate products on the market. These are specifically formulated to clean, protect, and optimize your engine’s fuel delivery.

Always choose additives from reputable brands and follow their instructions precisely. Your vehicle’s owner’s manual often provides guidance on approved additive types.

Common types of effective fuel system additives include:

1. Fuel Injector Cleaners: These often contain polyether amine (PEA) or polyisobutylene amine (PIBA) to dissolve carbon deposits. They restore injector spray patterns and improve fuel atomization.
2. Fuel Stabilizers: Essential for vehicles stored for long periods, these prevent gasoline degradation. They keep fuel fresh and prevent gum and varnish formation.
3. Octane Boosters: While usually unnecessary for vehicles designed for regular unleaded, these can slightly increase octane for specific performance applications. Always check your owner’s manual for recommended octane levels.
4. Ethanol Protection Additives: Some additives are designed to counteract the corrosive effects of ethanol on older fuel system components. They can also help prevent water absorption.

Using the correct additive can genuinely benefit your engine. It’s about choosing the right tool for the job.

Additive Type	Primary Purpose	Key Benefit
Fuel Injector Cleaner	Removes deposits from injectors	Restores fuel efficiency, smooths idle
Fuel Stabilizer	Prevents fuel degradation	Maintains fuel quality during storage
Ethanol Treatment	Protects against ethanol effects	Prevents corrosion, water separation

What to Do If You’ve Accidentally Added Plus Gas

Mistakes happen, and it’s understandable to feel a bit panicked if you’ve added the wrong fluid. The most critical step is to act quickly and correctly.

If you realize you’ve put Plus Gas or any other inappropriate fluid into your fuel tank:

• Do Not Start the Engine: Starting the engine will circulate the contaminated fuel throughout the system. This significantly increases the potential for damage to the fuel pump, lines, and injectors.
• Call for Professional Help: Contact your trusted mechanic or roadside assistance immediately. Explain exactly what happened and what you added.
• Fuel Tank Draining: A professional will need to drain the fuel tank completely. This involves safely removing all the contaminated fuel.
• System Flushing: After draining, the fuel lines and possibly the fuel rail may need flushing with clean gasoline. This removes any residual contaminants.
• Component Inspection: The fuel filter will almost certainly need replacement. Your mechanic will also inspect the fuel pump and injectors for any initial signs of damage.

Taking these steps can minimize the harm and save you from more extensive repairs down the road. It’s always better to be safe and seek expert help.

Prevention is always the best approach. Always double-check the labels on any fluid you add to your vehicle. Ensure it’s explicitly designed for your car’s fuel system.

Can I Put Plus Gas In My Car? — FAQs

What happens if I accidentally put Plus Gas in my gas tank?

If you accidentally put Plus Gas in your gas tank, do not start the engine. Starting it will circulate the penetrating oil throughout the fuel system, causing potential damage. Plus Gas is not designed to burn cleanly and can clog fuel injectors, foul spark plugs, and harm your catalytic converter.

Can Plus Gas damage my fuel injectors?

Yes, Plus Gas can significantly damage your fuel injectors. Its composition is thicker and contains lubricants not meant for fine atomization. This can lead to clogged injectors, altered spray patterns, and potential permanent damage, requiring costly replacement.

Is Plus Gas a fuel system cleaner?

No, Plus Gas is absolutely not a fuel system cleaner. It is a penetrating oil designed to loosen rusted metal parts. True fuel system cleaners contain specific detergents like PEA or PIBA that are formulated to dissolve carbon deposits within the fuel system safely.

What should I use instead of Plus Gas for my fuel system?

Instead of Plus Gas, use a reputable brand of fuel injector cleaner or a complete fuel system cleaner. Look for products specifically designed for gasoline engines that contain active cleaning agents. Always check your vehicle’s owner’s manual for recommended types of additives.

Will my car’s warranty be affected if I use Plus Gas in the fuel tank?

Yes, using unapproved substances like Plus Gas in your fuel tank can void your vehicle’s warranty. Manufacturers specify acceptable fuel types and additives for a reason. Any damage resulting from using an incorrect fluid will likely not be covered under warranty.