Sludge Buildup on Engine Due to Infrequent Oil Changes on Lexus GS400
Problem overview
Sludge can build up in the engine because Lexus 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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1 commentLexus GS400 vehicles with this problem
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