What does an engine oil system cleaner do? When should it be used on my Lexus?
The oil system cleaner is used for pre-cleaning the engine surfaces and for protection. With this cleaner, oil is able to reach its optimum performance. Aside from protecting the engine parts and enhancing lubrication, this also helps in restoring engine compression. In case sludge has formed, the cleaner helps remove this sticky, gel-like substance, along with varnishes and carbon deposits. This is typically used every 60,000 kilometers, or even sooner if needed. This should be used before your change oil. While the engine is warm, pour the cleaner into the oil crankcase. The engine should be running idle for about 15 minutes after, prior to changing the oil and the filter.
How often should the oil filter of my Lexus be replaced?
The oil filter should be replaced according to the prescribed maintenance schedule by the manufacturer. This should be checked and changed every time you perform an oil change. Otherwise, dirt and harmful particles that accumulated on the filter will contaminate the oil. If there's restriction on the clogged filter or it no longer works as efficiently as before, carbon, blow-by gases, moisture, and microscopic metallic grit can easily mix with oil. The dirty engine oil may not provide the needed lubrication and may fail to protect the engine.
When would be the most ideal schedule or interval for inspecting the air filter of my Lexus? What will happen if the air filter isn't replaced as recommended?
The air filter should be inspected twice in a year or every 8,000 kilometers. Remove the air filter to see if it's already clogged with dirt and particles that have been trapped by the filter itself. If you continue to use the old air filter, then this may not be able to keep harmful elements from getting into the engine. Normally, it's able to clean up to 24,000 liters of air per hour when you drive at 60 km/h. But when it's clogged or already filled with dirt, its efficiency will be reduced significantly. This will affect engine performance since the engine may not get that much air like before, making it more difficult for the engine to breathe and generate power. This will result in poor fuel efficiency and higher emissions. Hence, the air filter should be replaced as recommended or as needed.
When should the tires of my Lexus HS250h be replaced?
The tires of the vehicle should be checked regularly not only for proper air pressure but also for wear. Vehicle handling will be adversely affected if the tires already have uneven wear patterns. Inspect the tires and see if there are cracks or if the beads are already damaged or the sidewalls already have an unusual bulge. Usually, punctured tires can still be patched. However, if the tread hole can no longer be sealed from the inside or the inner liner, then it's best to replace them. Take note of tire tread wear as well.