Excess Engine Oil Consumption on Toyota Highlander

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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Average mileage: 61,437 (42,312–72,000)
Engine affected: 3.0L V6
2 model years affected: 2001, 2002
5 people reported this problem
3 people shared problem details
2002 Toyota Highlander- 3.0L V672,000
Plan to have engine flushed with detergent.
2001 Toyota Highlander- 3.0L V670,000
Suddenly started using one quart of oil per 100 miles but only on highway 60 mph or more. Around town used no oil. Regular oil changes were always done.
2002 Toyota Highlander- 3.0L V642,312
3 quarts of oil in 500 miles, so much for toyota reliability. I sould have bought another Ford.
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