Section 3 - Specifications
Page 30 90-8M0113856 eng DECEMBER 2015
Specifications—3.0 MPI ECT
Engine Specifications—3.0 MPI ECT
NOTE: Performance specifications are obtained and corrected in accordance with SAE J1228/ISO 8665 Crankshaft Power.
All measurements are taken with the engine at normal operating temperature.
RPM range is measured using an accurate service tachometer with the engine at normal operating temperatures.
Oil pressure must be checked with the engine at normal operating temperature.
NOTE: Oil pressure specifications are for reference and may vary.
Propshaft power
101 kW (135 hp)
Displacement
3.0 L (181 cid)
Alternator amperage
Hot 72 A
Cold 65 A
RPM
WOT 4400–4800
Rev limiter 4950
Idle in neutral 700
Minimum oil pressure
At 2000 RPM 207 kPa (30 psi)
At idle 28 kPa (4 psi)
Thermostat
Seawater‑cooled models
71° C (160° F)
Models with Closed Cooling
Timing at idle
Not Adjustable
Firing order
1‑3‑4‑2
Minimum battery rating
375 CCA, 475 MCA, 90 Ah
Spark plug type
AC MR43LTS
Champion RS12YC
NGK BPR6EFS
Spark plug gap
0.9 mm (0.045 in.)
Emission control system
Electronic control (EC), heated oxygen sensor
(HO2S), catalyst
Fuel Requirements
NOTICE
Running out of fuel can damage catalyst components. Do not allow the fuel tanks to become empty during operation.
IMPORTANT: Use of improper gasoline can damage your engine. Engine damage resulting from the use of improper
gasoline is considered misuse of the engine and will not be covered under the limited warranty.
Fuel Ratings
Mercury MerCruiser engines will operate satisfactorily with any major brand of unleaded gasoline that meets the following
specifications:
USA and Canada ‑ A posted pump octane rating of 87 (R+M)/2, minimum, for all models. Premium gasoline 91 (R+M)/2
octane is also acceptable for all models. Do not use leaded gasoline.
Outside USA and Canada ‑ A posted pump octane rating of 91 RON, minimum, for all models. Premium gasoline (95 RON) is
also acceptable for all models. Do not use leaded gasoline.
Using Reformulated (Oxygenated) Gasoline (USA Only)
Reformulated gasoline is required in certain areas of the USA and is acceptable for use in your Mercury Marine engine. The
only oxygenate currently in use in the USA is alcohol (ethanol, methanol, or butanol).
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