Owning a 1995 Lexus LS400 is a special experience. It’s a car celebrated for its revolutionary smoothness, quiet ride, and legendary reliability. That famous 1UZ-FE V8 engine is a masterpiece of engineering, designed to run flawlessly for hundreds of thousands of miles. But to keep that silky-smooth powerplant purring for the long haul, nothing is more fundamental than using the correct lubricants. Knowing the precise 1995 Lexus LS400 oil type and capacity isn’t just a maintenance checkbox; it’s an act of preservation for one of the finest luxury sedans ever built.
Using the wrong oil, or not enough of it, can slowly rob your engine of its signature refinement and, over time, lead to costly repairs. Whether you’re a seasoned DIY enthusiast or a new owner wanting to ensure your car gets the best care, this guide will walk you through everything you need to know. We’ll cover the specific oil grades, how much your engine holds, and some helpful tips to make your next oil change a success.
What Kind of Oil Does a 1995 Lexus LS400 Need?
For the 1995 model year, Lexus was very specific in its recommendations. The owner’s manual calls for API (American Petroleum Institute) certified SG or SH grade motor oil. While modern oils have moved far beyond these old designations, the key takeaway is the viscosity, or thickness. Lexus recommended 5W-30 for most driving conditions.
Let’s break down what 5W-30 means. The “5W” refers to the oil’s viscosity (flow) in cold weather (the “W” stands for winter). A lower number means the oil flows more easily when cold, allowing it to quickly circulate and protect engine components during startup—the moment when most engine wear occurs. The “30” refers to the oil’s viscosity at the engine’s normal operating temperature (212°F or 100°C), ensuring it remains thick enough to maintain a protective film between moving parts.
So, what should you use today? A high-quality full synthetic 5W-30 motor oil is an excellent choice. Synthetic oils provide superior protection against heat and breakdown, which is great for a high-performance V8. They also flow better in cold weather and help keep the engine cleaner internally. If you prefer conventional oil, a premium 5W-30 conventional or synthetic blend will also work perfectly, as long as it meets current API performance standards (like SN Plus or SP).
How Much Oil Does the 1UZ-FE V8 Hold?
The heart of your LS400, the 4.0-liter 1UZ-FE V8, has a specific thirst. For a standard oil and filter change, the total capacity is 6.4 US quarts, or approximately 6.1 liters.
It’s important to note that this is the total capacity after a complete drain and a new filter installation. You will not need to put all 6.4 quarts in at once. Here is a practical approach to avoid overfilling:
- After draining the old oil and replacing the filter, start by adding about 5.5 to 6.0 quarts of fresh oil.
- Let the oil settle for a minute, then check the dipstick.
- Add small amounts of oil, checking the dipstick after each addition, until the level reaches the full mark.
- It is always better to be slightly under and add more than to overfill the engine, as too much oil can cause foaming and damage.
Remember to run the engine for a few minutes after the change, then turn it off, wait a couple of minutes for the oil to drain back into the pan, and check the level one final time to ensure it’s perfect.
A Simple Guide to Your 1995 Lexus LS400 Oil Change
Changing the oil in your LS400 is a very straightforward job that can save you money and give you peace of mind. Here’s a quick overview of the process and the parts you’ll need.
You will need a high-quality oil filter. The OEM (Original Equipment Manufacturer) filter from Lexus/Toyota is always a fantastic choice, as it is engineered specifically for your engine. Popular part numbers include the Toyota 90915-YZZD2. A high-quality aftermarket filter from brands like Wix, Purolator, or Mobil 1 is also a great option.
For the oil drain plug, your LS400 uses a 14mm socket. You’ll also need an oil filter wrench to remove the old filter—a cap-style wrench that fits the specific diameter of the filter is the cleanest and most effective type to use. Don’t forget a drain pan that can hold at least 7 quarts, a funnel, and some gloves.
Keeping an Eye on Your Oil Between Changes
Even with its reputation for reliability, the 1UZ-FE engine in higher-mileage examples can sometimes develop small leaks or begin to consume a small amount of oil. It’s a good habit to check your oil level at least once a month. Simply park the car on a level surface, wait a few minutes after turning off the engine, pull the dipstick, wipe it clean, re-insert it fully, and then pull it out to get an accurate reading. The oil level should be between the two marks on the dipstick. If you notice it’s consistently getting low, you can top it off with the same 5W-30 oil you used for the change.
Final Thoughts on Your 1995 Lexus LS400 Oil Type and Capacity
Caring for your classic luxury sedan doesn’t have to be complicated. Sticking to the simple formula of 6.4 quarts of 5W-30 oil and a high-quality filter at regular intervals is the single best thing you can do for its long-term health. This simple act of maintenance ensures that the sophisticated V8 engine continues to deliver the whisper-quiet, vibration-free performance it was famous for. By giving it the right fluids and a little attention, you’re not just maintaining a car; you’re preserving a landmark in automotive history.