Infiniti generally relies on Nissan Genuine Long Life Coolant (LLC) that meets Nissan NS-1 specifications — an ethylene glycol-based coolant using Organic Acid Technology, typically sold premixed in a 50/50 ratio with distilled water.
Understanding Infiniti’s coolant standard
Infiniti vehicles share many components with their Nissan counterparts, and the official guidance from Nissan/Infiniti centers on NS-1–spec long-life coolant. The NS-1 coolant is designed for aluminum engines and modern cooling systems, providing extended maintenance intervals when used as directed. Always confirm the exact specification for your model in the owner’s manual or by contacting an Infiniti dealer.
To help you navigate the options, here is a concise breakdown of coolant types you may encounter and how to use them correctly.
- Nissan Genuine Long Life Coolant (LLC) that meets NS-1 specification — typically ethylene glycol-based and designed for Infiniti/Nissan engines; usually sold premixed at 50/50 with distilled water.
- Coolants from reputable brands that explicitly state NS-1 compatibility or are approved alternatives to Nissan NS-1 — these are acceptable if they carry the NS-1 specification and are used as directed by the manufacturer.
- Coolants that do not specify NS-1 compatibility or are universal mixes without a clear NS-1 rating — these should be avoided unless specifically approved for Nissan/Infiniti engines, as improper chemistry can cause corrosion or cooling problems.
In practice, most Infiniti owners should use Nissan Genuine Long Life Coolant NS-1 or an equivalent NS-1–approved product. Using the correct specification helps protect aluminum engine components and maintains warranty coverage.
Practical guidance for Infiniti coolant care
Following the recommended specification is essential. Do not mix coolant types or brands unless the second product explicitly states NS-1 compatibility. If you need to top off or replace coolant, consult your owner's manual or a certified Infiniti technician to select the right product and mixing ratio for your climate and model.
Maintenance and preventive steps
Keep the cooling system clean and check coolant levels regularly. When replacing coolant, consider a full system flush as advised by Infiniti service guidelines. Use distilled water if you’re preparing a premixed solution or diluting concentrates, and avoid tap water which can introduce minerals that promote deposits.
Additional considerations by model and market
Infiniti models released in different markets may have slight variations in recommended coolant formulations, though NS-1–based long-life coolant remains the common standard. Always verify with the vehicle’s documentation or a local dealer to ensure you’re using the correct specification for your exact model and production year.
Summary
Infiniti vehicles primarily require Nissan Genuine Long Life Coolant that meets the NS-1 specification, usually supplied in a premixed 50/50 solution. For reliability and warranty, stick to NS-1–compliant coolants from Nissan or other reputable brands that explicitly advertise NS-1 compatibility, and follow the owner’s manual and dealer guidance for replacement intervals and service procedures.