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Toyota Sienna

 

Report: Sludge Buildup on Engine Due to Infrequent Oil Changes

Toyota Sienna Problem
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Model Years Affected: 1998, 1999, 2000, 2001, 2002, 2003, 2006

Engines Affected: 3.0L V6, 3.3L V6

Average Mileage: 111,000 mi (50,000 mi - 172,000 mi)

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Sludge can build up in the engine because Toyota did not recommend frequent enough oil changes. Lexus will sometimes offer a discount on cleaning the engine if necessary. Owners who changed their oil every 3,000 miles did not experience these problems. This sludge build up can lead to excessive oil consumption.

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