Jeep Wrangler: TECHNICAL SPECIFICATIONS / CHASSIS FLUIDS AND LUBRICANTS

ENGINE FLUIDS AND LUBRICANTS

CAUTION! Mixing of engine coolant (antifreeze) other than specified Organic Additive Technology (OAT) engine coolant (antifreeze), may result in engine damage and may decrease corrosion protection...

CUSTOMER ASSISTANCE

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Other information:

Jeep Wrangler 2018-2026 Owners Manual: Draining Fuel/Water Separator Filter — Diesel Engine

The fuel/water separator housing is located inside the left frame rail in front of the fuel tank. The best access to this water drain valve is from under the vehicle. CAUTION! Do not drain the fuel/water separator filter when the engine is running...

Jeep Wrangler 2018-2026 Owners Manual: Fuel System Cautions

CAUTION! Follow these guidelines to maintain your vehicle’s performance: The use of leaded gasoline is prohibited by Federal law. Using leaded gasoline can impair engine performance and damage the emissions control system. An out-of-tune engine or certain fuel or ignition malfunctions can cause the catalytic converter to overheat...