Oil System

The best oil system upgrades for a turbocharged performance car are an air/oil separator or catch can from IAG, Mishimoto, Perrin, or Radium Engineering, a high-capacity baffled oil pan, and quality synthetic motor oil. These parts reduce oil vapor in the intake tract, keep oil pressure stable under hard cornering, and protect bearings at high RPM. They are among the most effective reliability mods you can buy before adding power.

The oil system does more than lubricate — it cools the pistons, feeds the turbo, and stabilizes the valvetrain. Turbocharged engines, especially the Subaru FA and EJ platforms we specialize in, push oil vapor back into the intake through the PCV system, which coats intercooler piping, intake valves, and sensors. A baffled catch can or air/oil separator intercepts that vapor before it reaches the intake, keeping the combustion chamber cleaner and lowering the chance of knock. Look for baffled, multi-stage designs with drain-back for street cars, and high-capacity pans with trap doors for track use.

Popular brands in this collection include Mishimoto, Radium Engineering, IAG Performance, and Perrin Performance — names known for WRX, STI, GR86, and BRZ oiling solutions. Pair them with supporting hardware from our oil coolers, baffled oil pans, and high-flow oil filters collections. See also the Mishimoto 22-26 WRX baffled catch can, the IAG air/oil separator for the 2022+ WRX, and our guide to aftermarket part warranties.

Do I need a tune after installing a catch can or air/oil separator?

Usually not. Catch cans and air/oil separators work on the PCV system and do not change airflow or fueling, so no tune is required for most applications — check your year and model to be sure.

Will these oil system parts fit my car?

Many oil system upgrades are engine-specific, especially air/oil separators and catch can kits. Use the fitment notes on each product page and confirm your year and model before ordering.

How hard is the installation?

Most catch cans and separators install with basic hand tools in one to two hours. Baffled pans and oil pumps are a bigger job that many owners leave to a shop.

Will an oil system upgrade void my warranty?

An aftermarket part alone does not automatically void a warranty, but coverage depends on the dealer and the failure. See our warranty guide linked above for details.