Wrangler 4WD L4-150 2.5L VIN P MFI (1998)
Engine Oil: Service and Repair
WARNING: NEW OR USED ENGINE OIL CAN BE IRRITATING TO THE SKIN. AVOID PROLONGED OR REPEATED SKIN
CONTACT WITH ENGINE OIL. CONTAMINANTS IN USED ENGINE OIL, CAUSED BY INTERNAL COMBUSTION, CAN BE
HAZARDOUS TO YOUR HEALTH. THOROUGHLY WASH EXPOSED SKIN WITH SOAP AND WATER. DO NOT WASH SKIN
WITH GASOLINE, DIESEL FUEL, THINNER, OR SOLVENTS, HEALTH PROBLEMS CAN RESULT. DO NOT POLLUTE, DISPOSE
OF USED ENGINE OIL PROPERLY.
ENGINE OIL SPECIFICATION
CAUTION: Do not use non-detergent or straight mineral oil when adding or changing crankcase lubricant. Engine failure can result.
API SERVICE GRADE CERTIFIED
Engine Oil Container Standard Notations
In gasoline engines use an engine oil that is API Service Grade Certified.
Standard engine oil identification notations have been adopted to aid in the proper selection of engine oil. The identifying notations are located on the
label of engine oil plastic bottles and the top of engine oil cans.
SAE VISCOSITY
An SAE viscosity grade is used to specify the viscosity of engine oil. SAE 10W-30 specifies a multiple viscosity engine oil.
Temperature/Engine Oil Viscosity
When choosing an engine oil, consider the range of temperatures the vehicle will be operated in before the next oil change. Select an engine oil that is
best suited to your area's particular ambient temperature range and variation.
ENERGY CONSERVING OIL
An Energy Conserving type oil is recommended for gasoline engines. They are designated as either ENERGY CONSERVING or ENERGY
CONSERVATION.
CRANKCASE OIL LEVEL INSPECTION
CAUTION: Do not overfill crankcase with engine oil, oil foaming and oil pressure loss can result.
The engine oil level indicator (Dipstick) is located at the right rear of both 2.5L engines and 4.0L engines. Inspect engine oil level approximately
every 800 kilometers (500 miles). Unless the engine has exhibited loss of oil pressure, run the engine for about five minutes before checking oil level.
Checking engine oil level on a cold engine is not accurate.
