NP Blog

Why Subaru FA & FB Engines Suffer From Oil Drain-Back If you've owned your Subaru for a while, you may have noticed that familiar clack-clack-clack on cold starts, that brief moment before oil pressure builds and everything quiets down. That's not just "Subaru being Subaru." Subaru FA and FB series engines have inverted oil filters mounted on the top of the engine and suffer from a prolonged dry start due to oil draining from the feed and output side of the oil filter following engine shutdo …

The community has spoken and we are listening. It has been a great start to the year, we have made a lot of new friends in the communities who have cars powered by the Subaru FB25 Direct Injected engine. Among the multitude of customers who love their aftermarket performance exhaust systems and are eager for updates on headers, midpipes, intakes and other products that bring the sound of the FB25 to life, we have had a handful who fed back some constructive criticism regarding the designs that w …