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J&L 3.0 Oil Separator Can Extension

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After many request for a larger capacity oil separator, we have released this can extension to double the capacity of your J&L 3.0 Oil Separator.

Using this extension, total capacity is increased to 6 ounces.

Please note this extension will NOT fit every single application.  This only fits the J&L 3.0 and JLT 3.0 Oil Separator and will not fit the Original JLT Oil Separator.

Here's a list of applications we do know it fits : 

3016P - Passenger Side 2011-2023 F-150 - 5.0L; 5.0L with Roush/Whipple Supercharger;2011-23 3.5L EcoBoost - BATTERY TRAY MOUNT ONLY ( 2015-19 2.7L EcoBoost PENDING)
3025P - Passenger Side 2015-2023 Ford Transit 150/250/350 3.5L EcoBoost (Valve cover mounted kit only)
3027P - Passenger Side 1999-2004 Ford Lightning; 2002-03 F150 Harley Davidson
3028P - Passenger Side 2021-2023 Ford F-150 PowerBoost; 2023 Ford Expedition 3.5L EcoBoost
3038P -
Passenger Side 2017-2018 ONLY Ford Escape 2.0L Ecoboost
3052P - Passenger Side 2020-2023 Ford Explorer 3.0L EcoBoost & 2020-2023 Lincoln Aviator 3L EcoBoost
3055D -
Driver Side 2020-2022 Ford Explorer 2.3L EcoBoost
3069D - Driver Side 2018-2023 3.6L Jeep Wrangler JL, 2019-2023 Jeep Gladiator
3070D - Driver Side 2020-2023 Jeep Wrangler JL 2.0L
3071P - Passenger Side 2021-2023 Ram TRX 6.2L SC
3072P - Passenger Side 2021-2023 Jeep Wrangler 392
3073P - Passenger Side 2021-2022 Ford Bronco 2.7L EcoBoost
3075P - Passenger Side 2021.5-2022 Ford Bronco 2.3L EcoBoost
3084D - Driver Side 1997-2013 Chevy/GM Truck/SUV 4.8L/5.3L/6.0L/6.2L
3085D - Driver Side 2014-18 Chevy Silverado/GMC Sierra 1500 5.3L & 2015-19 Chevy Tahoe, Suburban, & GMC Yukon/Yukon XL 5.3L
3086D - Driver Side 2019-2023 Chevy Silverado/ GMC Sierra 1500 5.3L/6.2L; 2021-2023 Chevy Tahoe, Suburban, & GMC Yukon/Yukon XL 5.3L/6.2L
3089D -  Driver side 2020-2023 Chevy Silverado/GMC Sierra 2500/3500 6.6L Gas Engine
3107D - Driver side '05-'15 Toyota Tacoma 4L; '05-'23 Toyota 4Runner 4L; '07-'14 Toyota FJ Cruiser 4L
3108P - Passenger side 2016-2023 Nissan Titan 5.6L
3113P - Passenger side 2023 Nissan Frontier 3.8L
3114P - Passenger side 2020-2023 Hyundai Palisade 3.8L; 2020-2022 Kia Telluride 3.8L

 EASY INSTALL- Screws onto your existing can between the top and bottom with an O-ring seal.  Capacity of oil separator increases to 6 ounces, very useful in the truck applications!


  *This product is NOT CARB (California Air Resource Board) Exempt. It is not for legal sale or use in the state of CA or any other states adopting CA emission standards and require a CA Executive Order (EO) number. Any orders placed for this item with a CA ship to address will be cancelled. 

33 Reviews Hide Reviews Show Reviews

  • it's the perfect size

    Posted by James Carpenter on 2024 Feb 12th

    and this thing works

  • Extention

    Posted by Tom mogler on 2024 Jan 29th

    Looks well made, fits my 2024 Silverado 6.2.

  • Catch can extension

    Posted by OSO Blanco on 2024 Jan 25th

    It seems like it may work. 6oz can probably should be standard. Time will tell how it does.

  • Must have for Winter months

    Posted by Alvaro Solis on 2024 Jan 25th

    During Winter I had to check my oil catch every week due to condensation in the engine. It was getting full quicker (looked like coffee). This extension helps a lot.

Oil Separator Frequently Asked Questions

Inside the oil separator there is a filter. The filtered side of the can should always go to the PCV valve or “dirty” connection. The filter is what turns the oil vapor into liquid form to be collected in the basin of the unit. You want this to happen as it is entering the can. The open port will run to your intake.

In most cases you only need an oil separator on the PCV side (dirty side) of the engine. This is the side that is under vacuum/suction most of the time while the vehicle is running and driving. The clean side typically is only used for venting when the PCV valve is closed which is under moderate to high acceleration.

Some turbo vehicles can see oil in the clean side, such as Ecoboost F-150’s when they are exposed to frequent towing conditions.

On non-turbo applications anything short of road course racing you typically will not see a drop of collection out of the clean side.

For most Ford applications there is a grey or green tab, you press in this larger tab. It is a button; it will release the fitting and you pull up on the fitting with the button pressed. ***DO NOT REMOVE THE CLIPS FROM THE FITTING! YOU WILL BREAK THEM!!***

For GMC/Chevy applications there is a single button release. This release and the location of some of these fittings can be tricky. You must press the bottom squarely and pull the fitting straight off. Many people make the mistake of pressing the button too hard and it flexes the release. Take your time and it will release. The 5.3L intake fittings are the toughest due to their location.

Most applications average about an ounce of oil every thousand miles. However, there are many factors in collection rate as every single engine is different. Factors such as driving style, climate, engine condition, oil level all vary and effect collection rate.

People in cold climates will have to check their oil separator more often in the winter months due to condensation build up occurring in the oil separator itself. In these months, the air entering the can is significantly hotter than the ambient air temp. This results in condensation build up (think hot shower in a cold bathroom).

We recommend everyone to check their oil separator at 500-1000 miles of driving to get an idea of how often it needs to be serviced. The can holds 3 ounces without the optional extension.

Your J&L Oil Separator is Guaranteed for Life! Click here for more details on your J&L Oil Separator Co. Warranty

Every 15K+ Miles you will want to thoroughly clean the oil separator, Click here to view the How-To video

The specs on the screws are M4 x .7 x 10mm, they can be found at just about any hardware store.

Sometimes when the oil separator is over tightened it can be tough to remove; also some oil separators are much more accessible once installed than others.

If you are having trouble removing the oil separator reservoir, try removing it from the bracket or even vehicle to get a better grip on it. For units that are really tough, we recommend a rubber oil filter strap wrench. You can use this in combination with a rag and typically remove them without damage.

When reinstalling the can bottom, treat it like an oil filter. Screw the can to the bottom of the O-ring. Give it another ¾ to 1 full turn. No more, no less.

No! Dispose of this nasty oil that is mixed with fuel, water and everything else where you would dispose of your oil change oil. Many auto parts stores will take your old oil for free of charge.

If you read the fine print on any warranty contract you will find a lot of reasons your warranty can become void; installing aftermarket parts can be one of them.

However, per the Magnuson–Moss Warranty Act proof would have to be provided that the after-market part caused the failure.

If you need further clarification, contact your vehicles service department. Some are easier to deal with than others.

Ordering Frequently Asked Questions

You will receive automated emails through our website when an order is placed and when the status is changed.

Gmail users will often find these emails under the “promotional tab”.

Yahoo users will often find all our order updates in their spam/junk folder.

When your order ships you will often get emails from the shipping service with tracking, your order in your customer portal will also have the tracking information.

Please be sure to check these folders prior to contacting us for further updates.

You can view our Return Policy by Clicking Here

We primarily use USPS and UPS for our shipping services, if you require expedited shipping or specific service please call 757-842-6497 to place your order or to get shipping quotes.

Small items such as replacement parts typically ship USPS First class mail.

Canadian orders placed through the website all ship USPS Priority International.

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