Is it normal for a 2009 Liana valve cover gasket to have oil seepage and sludge buildup?

Does the original 2013 Liana navigation system have a reverse camera?

What type of Shell oil should be used for a 2009 MDX?

I bought a used Liana and it's burning oil. What should I do?

Is it normal for a 2020 McLaren GT with 6000 kilometers on it to have oil seepage from the oil cooler?

Is there a solution for the Kia Sportage valve cover oil leak? Is it a common issue? I bought a 10-year-old manual second-hand car.

Is it normal for the clutch of a 2009 Accent to have some play at the beginning when you press it?

Is it normal for a 2009 Liana valve cover gasket to have oil seepage and sludge buildup?

Is it normal for the intercooler piping in my TuoLuZhe E5 to have oil drips?

Is it normal to have watermarks inside the headlight cover?

Does replacing the valve cover gasket and reapplying sealant on the 2021 Forester require lifting the engine? Both the 4S shop and outside mechanics say that the new engine bay has become smaller and that lifting the engine is necessary to replace the valve cover gasket. Is that true?