J&L Oil Separator Announces 3.0 Passenger Side Fitment for 2003-2004 Mercury Marauder


Official Release:

J&L 3.0 Oil Separator for the 2003-2004 Mercury Marauder

Ford Motor Company had a habit of turning the most mundane of vehicles into hotrods. Taurus SHO, Thunderbird Super Coupe, SVT Contour and of course this guy. The infamous 2003-04 Mercury Marauder.
There was talk of supercharged convertible version at one point, but that was quickly tabled. What did come to pass was a 302 horsepower 32 valve 4.6L engine that delivered over 300 pound feet of torque through a revised 4R75W 4-speed auto trans. In fact, it would haul this two-ton (plus) beast to 60mph in just 7.5 seconds and pass the lights in the quarter mile at 91 mph in just 15 seconds.
And guess Watt (pun intended)! It would turn a corner without rolling over for a belly rub. A Watts link rear axle, Tokico shocks and air springs in the rear with more Tokicos up front actually made for a spirited driving experience!
With just over 7,000 examples built in a two year period, they’re getting rare. You can find them, but you’ll pay for it! While “book” says they should be a $6,000 collectable, you’ll be hard pressed to find one with less than 100k on the clock for $14,000-$16,000.
If you’re lucky enough to own one, J&L Oil Separator Co. has added engine protection for you! Take a peek!

How does it work?

During the process of venting crankcase pressure back through your intake track, large amounts of oil, in the form of vapors can gather/accumulate in your intake tube, intake manifold runners and even dilute your gas, lowering its octane level. This happens on all engines and is even worse with forced inducted vehicles (supercharged and turbocharged) as crankcase pressures are increased. To combat this, we have developed an oil separator of our own design. Milled from solid billet aluminum this is a rock-solid piece. It has a knurled tank base for easy removal to drain the spent oil and an O-ring seal to prevent any leaks.

Filtering consists of a fine mesh stainless steel screen that traps fine oil vapors and releases them once heavy enough to fall. They then pass through a 1/2″ thick 1/16th” aluminum honeycomb filter where they grow every larger and then fall into the bottom. By the time the oil gets through the filter it’s too heavy to be passed on into the intake. The tank holds 3 oz of fluid, while that may not sound like a lot, you shouldn’t see that much oil in your PCV system. Drain it every 2000-3000 miles and you will never come close to filling it.


  • 3oz Capacity
  • Solid billet construction
  • Multi stage filter system designed to collect the finest of vapors and drop them into the easily removable bottom while allowing clean air to pass through to the intake

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