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Toyota 3.0 L V6
Toyota’s 3.0 L V-6 is prone to clotting with oil sludge and seizing up in 1997-2002 models with this engine, although Toyota is apt to blame owners for not changing the oil often enough or for using the wrong oil.
Many experts disagree, suggesting a defect in the breathing or circulation system is the likely culprit.
The affected models include V6 models of the 1997-2002 Toyota Camry, Avalon, Sienna, Highlander and Solara. The Lexus ES300 and RX300 used the same ill-fated 3.0 L V6. After 2002, Toyota made some improvements that appeared to solve the problem.
Toyota settled a class-action lawsuit in 2007 that covered an estimated 2.5 million Toyota and Lexus models made between 1997 and 2002 susceptible to engine sludge. The automaker agreed to repair sludged engines for up to eight years after leaving the factory.
