2003 – 2008 Infiniti G35 Oil Type and Oil Capacity

Don’t go down the Google rabbit hole searching for 2003 – 2008 Infiniti oil type and oil capacity. I’ll give you a specific answer that will help you quickly decide when picking a motor oil for your vehicle.

A simple oil change is one of the essential things you can do for your Infiniti G35. Its 3.5L V6 engine deserves regular top-ups and timely oil changes for optimal performance. So, let’s look into the type of oil it uses and how much oil it needs.

Read on to find out the top-performing options for the 2003 – 2008 Infiniti G35. 

2003 – 2008 Infiniti G35 Oil Type

You should use the correct oil type and quality for the 2003 to 2008 Infiniti G35. It ensures that your engine performs as intended and it will not lose power, become noisy, or break down.

Recommended Oil Type By Owner’s Manual

The Infiniti brand recommends using a low friction oil, also known as energy-conserving oil. This type of oil is designed to improve fuel economy by reducing viscous drag and energy loss. An oil that’s not low friction can damage the engine.

Additionally, make sure that you choose an oil with the API certification mark on the front of the container. API stands for American Petroleum Institute, a national trade association for the oil and natural gas industry.

If you cannot find oil with the API mark, use an API grade SG/SH, Energy conserving I & II, or API-grade SL or SJ, Energy conserving oil.

Infiniti approves using an ILSAC grade GF-I, GF-II, or GF-III oil if you can’t find any of the above categories.

You should use mineral-based oils that meet the API quality and the recommended SAE viscosity.

Oil Additives

Using oil additives is unnecessary if you stick to the approved oils and oil change intervals. Also, it’s best to steer clear of oil that was drained from another vehicle or has any foreign materials.

Oil Viscosity 

Oil viscosity refers to how well the oil flows at a specific temperature. Different oil viscosities are rated according to how the oil corresponds to the ambient temperature.

The 2003 – 2008 Infiniti G35 should use SAE 5W-30 oil. SAE stands for the Society of Automotive Engineers. This society has established the classification system for oil viscosity. The SAE 5W-30 oil ensures proper engine performance in temperatures below -20°F and above 100°F. Thus, it allows the engine to start smoothly in cold weather and provides adequate lubrication in hot weather.

However, if you operate your Infiniti G35 in a climate where temperatures never go below 0°F, you can use 10W-30 or 10W-40 oils. These oils don’t flow well in frigid weather; they perform best in average climates up to +100°F.

Oil Filter

Your 2003 – 2008 Infiniti G35 comes with a new filter. However, this filter will collect debris and sludge over time. Hence, it should be changed when you perform an oil change. Also, pick a high-quality oil filter that can withstand use according to your driving habits.

How Often Should You Change Engine Oil?

The oil and oil filter change for 2003 to 2008 Infiniti G35 is 7,500 to 10,000 miles or one year when using fully synthetic oils. Nevertheless, the interval is only 3,000 to 5,000 miles or six months if you’re using conventional oils.

Still, frequent oil and filter changes are recommended if you operate your vehicle in the following conditions.

• Dusty roads
• Frequent short distance driving in cold climates
• Hauling trailers or heavy loads
• Frequent stop and go rush hour traffic

2003 – 2008 Infiniti G35 Oil Capacity

2003 to 2007 Infiniti G35 takes 5 quarts of oil with a new oil filter. If you’re not changing the oil filter, it will take 4.5 quarts of oil. On the other hand, the 2008 Infiniti G35 can take 5.2 quarts of oil with a new filter and 4.5 quarts without changing the filter.

Infiniti acknowledges that these are capacity estimates. As such, it’s essential to follow the owner’s manual when doing a refill to determine the actual capacity at that point.

Best Oil for 2003 – 2008 Infiniti G35

Valvoline Advanced Full Synthetic SAE 10W-30 Motor Oil

Compared to other similarly priced motor oil competitors, the Valvoline brand surpasses and meets manufacturer standards. The Valvoline Advanced Full Synthetic SAE 10W-30 engine oil offers excellent friction protection thanks to its anti-wear additives. It takes care of critical engine moving parts to prevent breakdown for your hardworking 2003 – 2008 Infiniti G35.

The SAE 10W-30 means that the oil works in temperatures above 0°F. Therefore, it will flow fast and smoothly if you use your vehicle in the recommended ambient temperatures. In addition, Valvoline Advanced Full Synthetic 10W-30 resists breakdown before the oil change interval as it uses premium antioxidants.

Your engine will always run smoothly since it is kept clean. Thus, it will require less gas, which adds to your fuel economy. The oil’s quality never changes, so you can always count on the same viscosity. It comes in a 5-quart can, so you’ll not deal with a leaky bottle because you can toss it after the oil change.

The minus point some buyers complained about is that the bottles are quite flimsy, causing an unsafe sense when using.

Valvoline Advanced Full Synthetic SAE 10W-30 provides the ultimate engine lubrication. It resists breakdown, deposits, and exceptional temperature protection. You’ll never desire any other oil for your G35 once you choose Valvoline, so grab yours today.

Castrol 03037 Edge 5W-30 A3/B4 Advanced Full Synthetic Motor Oil

The high-performance 3.5L V6 engine in the 2003 – 2008 Infiniti G35 deserves only the best. This is especially important if you subject it to rigorous driving conditions. With the Castrol A3/B4 03037 Edge 5W-30 oil, you can drive on dusty roads and freezing weather with peace of mind. 

The Castrol Edge 03037 leads against viscosity breakdown. It offers wear and sludge protection for maximum engine performance. The oil also prevents old engine problems like a piston slap or engine ticking after a cold start. All thanks to a high flow rate in cold weather to prevent metal-to-metal contact.

Castrol Edge 5W-30 does not break down in hot temperatures. It prevents intense friction that can take away 10% of the engine’s performance in a hot climate. The oil will last a typical oil change interval of 10,000 miles.

Castrol Edge 03037 5W-30 is ideal for intensely driven cars. It protects the engine from further wear and helps it start smoothly in freezing conditions. Don’t hesitate to pick it for your Infiniti G35.

Mobil 1 High Mileage Full Synthetic 5W-30 Motor Oil

If your vehicle is clocking over 75,000 miles, you should protect its engine’s critical parts with high-mileage engine oil. I’m talking about the Mobil 1 High Mileage Full Synthetic 5W-30 motor oil. Its advanced synthetic formula combines high-performance synthetic base stocks and additives for high mileage cars.

Mobil 1 High Mileage oil also contains cleaning agents that loosen sludge from the engine. It will ensure that less sludge is left behind when you perform an oil change to help the engine operate smoothly. The oil lasts up to 10,000 miles, but it can also be changed sooner if you have lots of sludge buildup from conventional oils.

Mobil 1 High Mileage oil showcases outstanding thermal stability thanks to its SAE 5W-30 standard. The higher base viscosity provides high-temperature protection. Not to mention stress-free starts when the weather turns chilly.

The Mobil 1 High Mileage Full Synthetic 5W-30 motor oil is one of the best options for high-mileage engines. It’s ideal for 2003 – 2008 Infiniti G35 with over 75,000 miles. The advanced formula contains protective elements and cleaning agents that provide excellent engine safeguarding.

Pennzoil Ultra Platinum Full Synthetic 5W-30 Motor Oil

The Infiniti G35 is ridiculously fast. That’s why it has a dominant road presence. Being of a sporty breed, you’ll like an oil that keeps its engine free of clogging impurities. There’s no better pick than the Pennzoil Ultra Platinum Full Synthetic 5W-30 Motor Oil. It is made from natural gas. Thus, it lacks contaminants that usually make it into synthetic oils made from crude oil.

This advanced formula oil is made for extremely driven vehicles. If yours is a racer, this motor oil will prevent engine power loss on the track. It offers wear protection from its high viscosity and faster low-temperature flow in temperatures below 0°F.

The Pennzoil Ultra Platinum dislodges sludge, which helps to improve fuel economy. It claims to give you an extra 550 miles per year, which is expected with a high-quality oil. Also, the brand has lubrication wear protection if your engine gets damaged when using this oil. 

Pennzoil Ultra Platinum Full Synthetic 5W-30 Motor Oil is for the highly driven 2003 – 2008 Infiniti G35 that sees the track from time to time. It’s free from impurities to keep your engine running clean and smooth. You can’t go wrong with this choice for the service and price.

Recommendation

They say oils are cheap, but engines aren’t. That’s why picking the best oil for the 2003 to 2008 Infiniti G35 is one of the best services for your vehicle. These vehicles use 5W-30 oil in all temperatures and 10W-30 or 10W-40 in temperatures above 0°F. 

My top choice for normal weather is the Valvoline Advanced Full Synthetic 10W-30 oil. If your sedan has over 75,000 miles on it, it’s best to use a high-mileage oil like the Mobil 1 High Mileage Full Synthetic 5W-30 Motor Oil. Lastly, the Pennzoil Ultra Platinum Full Synthetic 5W-30 Motor Oil is an outstanding option for a clean engine in extreme driving conditions.