How much oil does a 2018 Lexus RX 450h take?
The 2018 Lexus RX 450h uses a 3.5-liter V6 hybrid engine, and it requires about 6.4 quarts (roughly 6.0 liters) of engine oil with a new filter. The typical recommended oil grade is 0W-20 synthetic. This article outlines the exact capacity, the right oil type, and practical steps for maintenance.
Understanding the oil capacity and spec
The RX 450h’s engine is a 3.5-liter V6 (2AR-FXE) paired with the hybrid system. For a full oil change, you should plan for 6.4 quarts (approximately 6.0 liters) of engine oil, including the new oil filter. The recommended oil grade in most markets is 0W-20 synthetic, API SN or ILSAC GF-5 compatible. Always check your owner’s manual or the under-hood label for regional variations.
What you need to know before you change the oil
Before listing the specifics, here is a quick reference for the oil you’ll use and the quantity you’ll need for a typical service:
- Engine oil capacity: 6.4 quarts (approximately 6.0 liters) with a new filter.
- Oil type: 0W-20 full synthetic recommended for most climates.
- Oil filter: Use a new OEM or high-quality replacement filter.
- Change interval: Generally every 10,000 miles (16,000 km) under normal driving conditions, or at least once a year if you accumulate fewer miles.
In summary, having 6.4 quarts of 0W-20 synthetic oil and a new filter on hand will cover a standard full oil change for the 2018 RX 450h. Regional specifications may vary, so always confirm with the official manual or dealer guidance.
Step-by-step guide to an oil change (at a glance)
To perform an oil change yourself or understand what a shop will do, follow these general steps. This list is for reference; if you’re unsure, have a professional handle the service to ensure proper disposal and sealing.
- Warm the engine for a few minutes to loosen old oil.
- Elevate the vehicle safely and support it with stands if needed.
- Place a drain pan beneath the oil sump and remove the drain plug to drain used oil.
- Remove the old oil filter and install a new filter, ensuring a light coating of fresh oil on the gasket.
- Replace the drain plug, then add 6.4 quarts (about 6.0 liters) of 0W-20 synthetic oil.
- Run the engine for a brief period, check for leaks, and shut off to allow oil to settle.
- Check the oil level with the dipstick and top up if necessary to reach the full mark.
- Dispose of the old oil and filter responsibly at an approved facility.
Following these steps will help ensure the engine maintains proper lubrication and performance after a full oil change.
Maintenance notes and tips
Keep these considerations in mind to maintain optimal engine health and oil life for your 2018 RX 450h:
- Use a high-quality 0W-20 synthetic oil that meets the API and ILSAC requirements indicated in your manual.
- Record the date and mileage of each oil change to maintain adherence to recommended intervals.
- If you drive in extreme conditions (very hot/cold climates, heavy city traffic, or frequent towing), consult your dealer for any recommended adjustments to oil type or change intervals.
With proper planning and adherence to the recommended capacity and oil specification, the RX 450h’s engine oil service will help sustain performance and reliability across its hybrid powertrain.
Summary
The 2018 Lexus RX 450h requires about 6.4 quarts (roughly 6.0 liters) of engine oil, including a new filter, when performing a full oil change. The standard oil specification is 0W-20 synthetic. Plan for a change every 10,000 miles (16,000 km) under normal driving, or at least once per year if your mileage is low. Always verify exact figures for your region in the owner’s manual or at a Lexus service center.
