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First marketed in March 2005, the car quickly became BMW Group's best-selling car worldwide, and by the end of the year 229,900 vehicles had been delivered. [76] The BMW E90 series was the best-selling luxury car in Canada and the United States. The 2006 E90 marked the 15th consecutive year that the 3 Series was named on Car and Driver's 10Best.
Indications of low oil pressure may be that the warning light is on, a low pressure reading on the gauge, or clattering/clinking noises from the engine. Low oil pressure is a problem that must be addressed immediately to prevent serious damage. The leading cause of low oil pressure in an engine is wear on the engine's vital parts.
The BMW N52 is a naturally aspirated straight-6 petrol engine which was produced from 2004 to 2015. The N52 replaced the BMW M54 and debuted on the E90 3 Series and E63 6 Series . The N52 was the first water-cooled engine to use magnesium/aluminium composite construction in the engine block. [ 1 ]
The BMW N55 is a turbocharged straight-six petrol (gasoline) engine that began production in 2009. The N55 replaced the BMW N54 engine and was introduced in the F07 5 Series Gran Turismo. The N55 was BMW's first straight-six engine to use a twin-scroll turbocharger. It also won three straight Ward's 10 Best Engines awards in 2011–2013. [1]
The BMW N53 is a naturally aspirated straight-6 petrol engine which was produced from 2006 to 2013. The N53 replaced the BMW N52 in certain markets and debuted on the post-facelift E60 5 Series . In European markets, the N53 began to replace its port injected parent, the BMW N52 in 2007.
The N54 has two small low-pressure turbochargers to minimise turbo lag. BMW's marketed the twin-turbo as "TwinPower Turbo", [10] although the term has since been used for engines which have a single twin-scroll turbocharger. [11] [12] The boost pressure is 8 psi (0.55 bar) and an air-to-air intercooler is used.