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00:00:00 – 00:08:29
The video discusses the BMW B48 engine, produced since 2014 as an upgrade to the N20 engine. The B48 is popular in the US since 2017, delivering 240-255 horsepower. Common issues include valve cover gasket leaks and oil filter housing cracks around 70,000-80,000 miles. BMW also addressed a coolant line problem in certain models. Despite minor aging-related problems, the engine is generally reliable and trusted, even utilized by Toyota for the Supra. It is advisable to monitor for leaks in gaskets and seals as the engine ages.
00:00:00
In this segment of the video, the focus is on the BMW B48 engine, which has been in production since 2014 as a replacement for the N20 engine. The B48 is a two-liter turbocharged inline four engine commonly used in the United States since 2017. It features technologies like direct injection, Valvetronic, and Double VANOS, producing around 240 to 255 horsepower and similar torque figures. Common engine problems discussed include valve cover gasket oil leaks, a known issue across BMW engines due to gaskets degrading over time. Other potential oil leaks on the B48 to watch for are the oil filter housing gaskets, and the front and rear main seals as the engine ages.
00:03:00
In this segment of the video, the key points include the recommendation to replace the entire valve cover if the gasket needs replacing to ensure added safety and the potential issue of cracks in the oil filter housing for the BMW B48 engine, typically occurring around 70,000 to 80,000 miles. Cracked oil filter housings can lead to coolant leaks or oil and coolant mixing, which can harm engine lubrication. It is advised to monitor for any signs of oil mixing with coolant. Additionally, BMW issued a Technical Service Bulletin for a coolant vent line issue affecting certain F chassis models, with affected models having the part replaced for free.
00:06:00
In this segment of the video, it is mentioned that BMW discovered a coolant line issue in F series models, leading to a replacement program for affected vehicles. Owners of F chassis two, three, and four series are advised to contact their local BMW dealer for information on the service bulletin. The video concludes that the B48 engine is generally reliable with minor issues emerging as it ages, common among aging cars with rubber and plastic parts. The engine is noted for its reliability, with Toyota even using it for the Supra. Despite some minor leaks reported, the engine is considered trustworthy.