If you own an Infiniti and you have been researching a Q50 oil catch can, the first thing worth understanding is that not all Infiniti V6s belong in the same conversation. The Q50 twin-turbo and the G37 share a brand, and even a broad family resemblance under the hood, but their engines are built around fundamentally different induction and fueling strategies — and that distinction changes what a catch can is actually doing for each one, and whether a documented solution even exists for your platform.
This guide separates those two cases clearly. The VR30DDTT in the Q50 and Q60 3.0t is a twin-turbocharged, direct-injection V6 with well-documented concerns around oil vapor in the charge path and intake-valve deposits. The VQ37VHR in the G37, Q60 3.7, and 370Z is a naturally aspirated, port-injected V6 where the relevant discussion centers on crankcase pressure and oil in the intake system — not the same problem, and not the same solution. If you want to understand how an oil catch can works before diving into the engine-specific details, that foundational guide covers the mechanics.
Tracy Lewis Performance documents the Q50 twin-turbo as its Infiniti application. Owners of other Infiniti platforms should review the Infiniti fitment guidance page and reach out for fitment confirmation before ordering anything.
Why the Q50 VR30DDTT and G37 VQ37VHR Need Different Advice
Engine architecture is the reason a single "Infiniti catch can" recommendation can send owners in the wrong direction. The fueling and induction design determines what is actually at risk, which portions of the intake system are most affected, and what a catch can is positioned to intercept. Conflating the VR30 and VQ37 produces content that is partly right for each engine and fully correct for neither.
The article that follows keeps those two engines separate throughout. VR30DDTT guidance is built around documented Q50 twin-turbo applications and direct-injection-specific concerns. VQ37VHR guidance is clear about what the relevant concerns are for that platform — and equally clear that fitment for that engine must be confirmed separately before any purchase.
VR30DDTT: Twin-Turbo and Direct Injection
The VR30DDTT is a twin-turbocharged, direct-injection V6 found in the Q50 3.0t, Q60 3.0t, and Q60 Red Sport. Direct injection means fuel is delivered directly into the combustion chamber rather than into the intake port, which eliminates the fuel-wash effect that port injection provides on intake valves. Over time, oil vapors passing through the PCV system — combined with combustion blow-by gases — can leave residue on intake valves without any solvent to rinse it away.
For Q50 owners, this plays out as a real-world concern visible in charge pipes, intercooler cores, and throttle-body surfaces. EcuTek and JB4 users running elevated boost add another dimension: tuned PCV routing and increased crankcase pressure can put more vapor into the charge path than a stock-boost setup. Forum threads and owner reports regularly surface questions about oil in charge pipes, intercooler-related oil films, and intake residue after moderate mileage. A vr30ddtt oil catch can is positioned to intercept that vapor before it reaches the intake manifold and charge-air system. A thorough catch-can overview is available if you want the broader context on how these systems are designed and selected.
VQ37VHR: Naturally Aspirated and Port Injected
The VQ37VHR is a naturally aspirated, port-injected V6. It powers the G37, the Q60 3.7, and the 370Z. Port injection means fuel is introduced upstream of the intake valve, which provides a continuous cleaning effect on valve surfaces. The VQ37 catch can discussion is not primarily about direct-injection intake-valve coking — that point is worth stating plainly, because a lot of content in this space conflates the two.
What VQ37VHR owners commonly deal with is crankcase pressure and oil entering the intake system through the PCV path. At high RPM — and the VQ37 rewards high-RPM use — crankcase pressure can push oil vapor into the intake manifold, throttle bodies, and intake tubing. The visible result is oil film in intake plumbing and throttle-body residue that accumulates over time. That is a legitimate concern. It is simply a different concern from VR30-style charge-path oil and deposit accumulation, and it should be addressed on its own terms.
Tracy Lewis Performance does not document a confirmed VQ37 application in available materials. G37, Q60 3.7, and 370Z owners should request fitment confirmation rather than assuming a Q50-spec setup carries over.
Q50 Oil Catch Can Considerations for the VR30DDTT
The Q50 twin-turbo is the documented Tracy Lewis Performance Infiniti application, and this is where the article's practical guidance is most grounded. The goal of an oil catch can q50 setup on the VR30DDTT is to intercept oil vapor and blow-by gases before they reach the intake manifold, charge piping, or turbocharger inlet — keeping those surfaces cleaner than they would be with the PCV system venting back unchecked. The language here is deliberately conditional, because no two Q50s operate in exactly the same conditions, and a catch can is one part of overall PCV system management, not a universal guarantee of any specific outcome.
Why Q50 Owners Look for Catch Can Solutions
The search terms that bring Q50 owners to this topic reflect what they are actually seeing on their cars. Oil in charge pipes, film on intercooler cores, residue at the throttle body, and PCV-related questions after a tune are the most common entry points. Owners who have added boost with EcuTek maps or JB4 tunes sometimes notice increased vapor in the charge path, which surfaces questions about PCV management that stock-boost owners may not have had reason to ask.
The phrase "infiniti q50 oil in intake" appears frequently in forum threads and search queries. It is worth being clear that oil presence in intake plumbing has several possible explanations — PCV vapor is one, and a common one — but diagnosing turbocharger condition, oil consumption, or misfires requires proper inspection rather than catch-can installation alone. A catch can addresses vapor management; it is not a diagnostic substitute.
Documented Q50 Twin-Turbo Application
Tracy Lewis Performance documents the Q50 twin-turbo as a confirmed Infiniti fitment. The built-to-order Tracy Lewis Catch Can is built to match the specific application rather than adapted from a universal kit, which is part of how it is differentiated from off-the-shelf options. Kits are made in the USA, and vehicle details are required at checkout so the correct configuration is built.
A few features are worth noting for owners evaluating the system. The catch can operates using full-time vacuum positioning, which keeps the separator functional across a broader range of operating conditions rather than only during specific load or RPM windows. The Clean Side Separator is included with the kit and addresses oil ingestion upstream of the throttle body, so the system manages both the PCV outlet and the clean-side path. These are the differentiators the shop documents; installation routing, bracket hardware, and hose specifications should be confirmed through the product page and any available installation documentation.
Q50 Red Sport and Boost Above 12 PSI
Boost level matters when selecting components for the intake-manifold side of a VR30DDTT catch can setup. The documented guidance from Tracy Lewis Performance is direct: a twin-turbo Infiniti application running more than 12 psi needs the High Performance check valve on the intake-manifold side.
For Q50 Red Sport owners — and for anyone who has raised boost through tuning — that threshold is the relevant reference point. At elevated boost levels, standard check valve specifications may not hold the manifold side reliably, and the High Performance check valve is the documented solution for that condition. This is check-valve guidance specifically; it does not imply that a confirmed Q60 Red Sport catch-can kit exists as a separate documented product. Q50 Red Sport and tuned Q50 owners should confirm their current boost level and discuss their specific setup before ordering to make sure the right components are selected.
Related Products for the VR30DDTT Q50 Application
- Built-to-Order Tracy Lewis Catch Can — Documented for the Q50 twin-turbo application; built to order for the specific platform rather than adapted from a universal unit.
- Aluminum High Performance Check Valve — Required on the intake-manifold side for twin-turbo Infiniti applications running more than 12 psi.
- Tracy Lewis Clean Side Separator — Included with the kit; also sold separately as a replacement or for owners managing the clean-side path on an existing system.
G37, Q60 3.7, and 370Z Catch Can Considerations for the VQ37VHR
VQ37VHR owners asking about a g37 oil catch can are raising a legitimate question — but the reasoning behind it is different from the VR30 case, and that difference should be front and center. Port injection changes the intake-valve-deposit conversation significantly. Fuel is introduced upstream of the valve on the VQ37, which means the fuel-wash effect is present and active-valve carbon accumulation is not the primary concern. This does not mean the VQ37 has no catch-can use case. It means the use case needs to be described accurately.
What a VQ37 Owner May Be Trying to Address
High-RPM operation, crankcase pressure, oil entering intake tubing, throttle-body residue, and oil pooling in the intake manifold are the concerns that appear in VQ37 owner discussions. G37 and 370z catch can threads on MyG37, My370Z, and related forums focus on intake cleanliness, PCV system odors, and managing what owners can see accumulating in their intake systems over time. These are practical concerns that make sense for a naturally aspirated engine that is often driven hard.
To be precise: these are crankcase-pressure and intake-oil management concerns. They are worth evaluating on their own terms. They should not be framed as a direct-injection carbon-deposit problem, because the VQ37 does not share that specific vulnerability with the VR30. The q60 catch can discussion that applies to the Q60 3.7 belongs in this category — distinct from the Q60 3.0t or Red Sport, which use the VR30DDTT and belong to the turbocharged direct-injection discussion above.
Fitment Confirmation Is Required for VQ37 Applications
No documented Tracy Lewis Performance VQ37 application is available in current materials. That means G37, Q60 3.7, and 370Z owners should not assume the Q50 twin-turbo setup carries over to their platform. A catch can is a system-specific installation, and getting the routing, canister sizing, and check-valve specification wrong creates problems that a correct fitment avoids.
The right first step for vq37 catch can questions is to e-mail the shop directly at apdeg@aol.com and request fitment confirmation. The Infiniti hub page is the central resource for current platform guidance and contact information. When reaching out, have your vehicle details ready: model, model year, engine, any modifications, and what you are trying to address. If Tracy Lewis documents a VQ37 application in the future, this section will be updated with confirmed fitment details.
If you are still working out whether a catch can makes sense for your situation at all, Do You Need an Oil Catch Can? covers the general decision process in detail.
Choosing the Right Next Step for Your Infiniti
The decision path here is straightforward once the engine is identified. The two platforms call for two different responses, and the clearest service this guide can offer is to keep them from being confused.
If You Have a Q50 Twin Turbo / VR30DDTT
The documented application is in place for the Q50 twin-turbo. As you evaluate an infiniti q50 catch can for your build, the most important variable beyond fitment is your current boost level. If you are running more than 12 psi — whether stock tune, JB4, EcuTek, or any other modification that raises boost — the High Performance check valve on the intake-manifold side is part of the documented recommendation, not an optional add-on.
The built-to-order Q50 twin-turbo catch can is the starting point for VR30DDTT owners. Review the product page for current specifications and ordering details, and confirm your boost level and any tune specifics when placing an order so the shop can build the correct configuration.
If You Have a G37, Q60 3.7, or 370Z / VQ37VHR
Do not assume the Q50 setup fits. The VQ37VHR is a different engine in a different chassis, and fitment confirmation is required before purchase. The Infiniti hub page is where to start — it outlines current platform guidance and provides the contact information for reaching the shop directly.
When you email, be prepared to share your model, year, engine, current modifications, mileage, and what you are trying to manage. The more specific you can be, the faster a useful response comes back. The g37 oil catch can and vq37 catch can questions are worth asking — they just need to be answered with a confirmed fitment rather than an assumption from the Q50 side of the catalog.
Warranty, Legality, and Maintenance Questions to Consider
These questions appear in nearly every forum thread on the topic, and they deserve a direct but appropriately qualified response. If warranty coverage, emissions compliance, or maintenance practices are concerns for you, the following applies.
Warranty Considerations
Whether adding an oil catch can affects your vehicle warranty depends on factors that vary: your specific warranty terms, how the modification is characterized, the dealer involved, and the circumstances of any future warranty claim. Dealer responses on this question are inconsistent — some treat catch cans as a non-issue, others may raise concerns depending on the claim being made and the components involved.
The practical guidance is this: review your warranty terms before making any modification, and if warranty coverage is a priority, discuss your plans with the relevant dealer or warranty administrator before proceeding. This article does not provide legal advice, and no one should take a general statement about catch cans and warranties as applicable to their specific situation. Do you need an oil catch can? addresses some of the broader considerations worth thinking through before purchase.
Maintenance and Inspection
A catch can is not a fit-and-forget component. The material it collects needs to be inspected and emptied periodically. How often that is needed depends on the specific setup, the engine's condition, operating temperatures, driving patterns, and other variables — there is no universal interval that applies equally to a stock Q50 daily driver and a tuned Red Sport at the track.
Follow the product-specific instructions for your particular system. If you are seeing the can fill more quickly than expected, that is worth investigating as a question about engine condition rather than simply a maintenance nuisance. The oil catch can guide covers system maintenance principles in more detail.
Infiniti Catch Can Summary
The VR30DDTT and the VQ37VHR are not the same engine, and they should not be treated as the same catch can application. The VR30DDTT is a twin-turbocharged, direct-injection V6 where the relevant concerns involve oil vapor in the charge path and the absence of port-injection fuel wash on intake valves. The VQ37VHR is a naturally aspirated, port-injected V6 where crankcase pressure and oil in the intake system are the real issues — valve coking in the DI sense is not the story there.
Tracy Lewis Performance documents the Q50 twin-turbo as its confirmed Infiniti application. The Q50 twin-turbo catch can is built to order for that platform, and twin-turbo applications running more than 12 psi should include the High Performance check valve on the intake-manifold side as part of that system. That is the documented guidance, and it applies whether the Q50 is stock-boost or tuned above that threshold.
G37, Q60 3.7, and 370Z owners have legitimate reasons to evaluate catch can solutions for the VQ37VHR, but a confirmed fitment for that engine is not currently documented. The right path is to request Infiniti fitment confirmation through the hub page before making any purchasing decisions.
A q50 oil catch can decision and a VQ37 decision are both worth making carefully. This guide's purpose is to make sure each one is made on the right terms.
Q50 and G37 Oil Catch Can FAQs
Does a Q50 need an oil catch can?
The Q50 3.0t uses the VR30DDTT, a twin-turbocharged, direct-injection V6. Direct injection delivers fuel directly into the combustion chamber rather than through the intake port, which means intake valves do not receive the cleaning effect that port injection provides. Oil vapors from the PCV system and blow-by gases can enter the charge path and leave residue on intake-valve surfaces and charge-air plumbing over time. A catch can is positioned to intercept that vapor before it reaches the manifold and turbocharger inlet. Whether an individual Q50 owner needs one depends on their specific setup, boost level, engine condition, and performance goals. Not every Q50 will show the same accumulation rate, and a catch can is one part of managing the PCV system rather than a guaranteed fix for any single symptom.
Does a G37 need an oil catch can?
The G37 uses the VQ37VHR, a naturally aspirated, port-injected V6. Port injection means fuel is delivered through the intake port upstream of the valve, providing a continuous fuel-wash effect on valve surfaces. Intake-valve coking in the direct-injection sense is not the primary concern for VQ37VHR owners. The more relevant discussion involves crankcase pressure, oil entering intake plumbing through the PCV system, and oil residue in throttle bodies and the intake manifold — concerns that are most visible at high RPM and over extended mileage. Whether a specific G37 owner would benefit from a catch can depends on their engine's condition, driving style, and what they are trying to address. Tracy Lewis Performance does not currently document a confirmed VQ37VHR application; fitment must be confirmed before purchase.
Which check valve does a Q50 Red Sport need above 12 psi?
For a twin-turbo Infiniti application running more than 12 psi, the documented guidance from Tracy Lewis Performance is to use the High Performance check valve on the intake-manifold side. At boost levels above that threshold, the intake-manifold-side check valve needs to be rated for the pressure it will see during operation. Red Sport owners and any tuned Q50 owner running above 12 psi should confirm their current boost level and include the High Performance check valve as part of their catch can system. This guidance applies to documented twin-turbo Q50 applications; it does not imply a confirmed catch-can kit for undocumented Q60 Red Sport or other configurations.
Does an oil catch can void a Q50 warranty?
Warranty outcomes depend on the specific warranty terms in place, the dealer involved, how a modification is characterized, and the nature of any warranty claim being made. Dealer responses on this question are not consistent across the board. Adding a catch can does not automatically void a warranty, but it may be raised as a factor in specific claim situations depending on the circumstances. Owners who have active warranty coverage and are concerned about how this modification might be treated should review their warranty documentation and discuss the question directly with their dealer or warranty administrator before proceeding. This is not legal advice, and no general statement here should be taken as applicable to an individual owner's specific warranty situation.
How often should I empty an Infiniti oil catch can?
Inspection and emptying needs vary based on the individual setup, engine condition, operating conditions, boost level, and driving patterns. There is no universally correct mileage or time interval that applies to every installation. A stock-boost Q50 used primarily for commuting will accumulate material differently than a tuned Red Sport used on track days. Check the can as part of routine maintenance, follow any product-specific instructions provided with your system, and pay attention to fill rates over time. If the can is filling more quickly than expected, that may be worth investigating as a question about engine or PCV system condition rather than treating it as a normal baseline.