The 2015 Infiniti Q40 requires synthetic motor oil with a viscosity of 5W-30, meeting ILSAC GF-5 and API SN standards. The engine’s oil capacity is roughly 5.3 quarts with a new filter. Use a reputable brand or Infiniti/Nissan-approved synthetic oil and verify exact requirements in the owner’s manual for your climate.
Engine and oil specifications
The 2015 Q40 uses the 3.7-liter V6 (VQ37VHR), and Infiniti’s guidance centers on a full synthetic 5W-30 oil that meets ILSAC GF-5 and API SN. This viscosity and specification provide reliable cold-start protection, wear resistance, and engine cleanliness across most operating conditions. Always consult the owner’s manual or a qualified technician for confirmation in your region.
Approved oil options
Below are the primary oil options typically approved for the 2015 Q40. Always verify with your manual or dealer if you operate in a climate or market with special requirements.
- 5W-30 full synthetic oil meeting ILSAC GF-5 and API SN (the standard recommendation for most regions; choose a reputable brand or Infiniti/Nissan Genuine oil).
- 0W-30 full synthetic oil meeting ILSAC GF-5 and API SN (acceptable only if your manual or dealer indicates it is suitable for your climate; may offer better cold-flow in extreme cold).
Bottom line: 5W-30 synthetic is the safe default in most climates; 0W-30 is a conditional alternative based on climate and official guidance.
Oil capacity and maintenance guidelines
The 3.7L V6 in the Q40 holds about 5.3 quarts of oil with a new filter. When performing a change, fill to the full mark on the dipstick after the engine has circulated the oil, then recheck and top up as needed. Replace the oil filter with every oil change.
Maintenance intervals for synthetic oil on the 3.7L V6 typically range from 5,000 to 7,500 miles under normal driving, with more frequent changes under severe service conditions (short trips, extreme temperatures, heavy towing, dusty environments). Always follow the interval specified in the owner’s manual or by your Infiniti dealer for your specific driving conditions.
Summary
In short, the 2015 Infiniti Q40 uses synthetic 5W-30 oil that meets ILSAC GF-5/API SN, with an approximate capacity of 5.3 quarts including the filter. Use Infiniti-approved or equivalent high-quality synthetic oil and follow the owner’s manual for climate-specific guidance and maintenance intervals to ensure optimal engine performance and longevity.