❄️Coolant Type

Infiniti I35 Coolant Type

Find the correct coolant type, color, and capacity for your Infiniti I35. Covers all years with flush intervals and mixing compatibility.

Quick Answer

The Infiniti I35 uses manufacturer-specific coolant — typically long-life OAT or HOAT formula. Never mix different coolant types. Check the year breakdown below for your specific coolant color and capacity.

2002-2004

2002-2004
Coolant TypeIAT (traditional green)
Coolant ColorGreen
Total Capacity6.0 - 10.0 quarts
Drain & Fill Volume3.0 - 5.0 quarts
Change Interval30,000 miles or 2 years
Concentration50/50 with distilled water
Notes
  • NEVER mix different coolant types or colors — flush completely when changing brands
  • Always use distilled water, not tap water, when mixing coolant concentrate
  • Check coolant level when engine is COLD — opening the radiator cap when hot causes severe burns

Frequently Asked Questions

What type of coolant does a Infiniti I35 use?
The Infiniti I35 coolant type depends on the model year. Newer models use long-life OAT or HOAT coolant (often pink, blue, or orange). Older models use traditional green IAT coolant. Never mix types — check the specs below for your year.
How much coolant does a Infiniti I35 hold?
The Infiniti I35 cooling system typically holds 6-10 quarts total. A drain-and-fill replaces about 50-60% of the coolant. For a full system flush, you'll need the complete capacity amount plus extra for bleeding.
Can I mix coolant colors in my Infiniti I35?
No — mixing different coolant types can cause gel formation, clogged passages, and overheating. If you don't know what's in the system, do a complete flush before adding new coolant. Use only the manufacturer-specified type.
How often should I change coolant in my Infiniti I35?
Modern Infiniti I35 models with long-life coolant can go 100,000 miles or 10 years before the first change, then every 50,000 miles. Older models with green coolant need changes every 30,000 miles or 2 years.

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