Has the Issue of Oil Dilution and Oil Emulsification in the Wildlander Been Resolved?
3 Answers
Wildlander's issue of oil dilution and oil emulsification has been resolved. Introduction: The Wildlander is the fourth member of the TNGA product family, following the eighth-generation Camry, C-HR, and the all-new Levin, and it is also GAC Toyota's first TNGA mid-size SUV model. Exterior: The Wildlander's design retains a large number of chiseled polygonal shapes. The front face incorporates an elegant and refined design, with the upper grille seamlessly integrating with the slender and sharp headlights on both sides, creating a sense of horizontal extension. Interior: For the interior, the dashboard features extensive horizontal polygonal designs, with a strong sense of layering from top to bottom. It is equipped with a 10.1-inch floating thin central control screen, and the air conditioning panel is designed to protrude outward for convenient operation.
As a hybrid owner, I've specifically researched this issue. The oil dilution problem in the Wildlander primarily occurs in the hybrid version, especially for vehicles frequently driven on short trips in low temperatures. Toyota later updated the ECU programming to allow the engine to warm up faster, and also replaced the oil cap with a new anti-emulsification version. My vehicle, purchased in 2022 with over 30,000 kilometers, has shown no signs of oil dilution or emulsification during every maintenance check where I closely monitored the dipstick. Newly manufactured vehicles should now come with these upgrades, but owners in northern regions should still avoid frequent ultra-short trips of just 2-3 kilometers and regularly check oil color and level for safety. Existing owners should promptly visit a 4S dealership for the free software upgrade, which typically resolves the issue.
Having repaired Toyota vehicles for over a decade, I've encountered this issue frequently with the Wildlander. The root cause lies in the hybrid engine's frequent start-stop cycles introducing gasoline into the engine oil, particularly noticeable in cold weather. The 2020 models were most severely affected, with milky emulsion often found when removing the oil cap. The manufacturer has since recalibrated the engine control program for newer models to achieve faster warm-up and improved oil seal components. If you own an older model, promptly contact your dealership for software upgrades - don't wait until the warranty expires. In recent months during maintenance checks on newer Wildlander units, I've made this a priority inspection item and have essentially stopped finding this issue.
