Mercury 4.2 Diesel User Manual

Section 3 - Specifications
Page 34 90-8M0113987 eng DECEMBER 2015
Engine Specifications
Description
Specifications
2.8 4.2
Engine type In‑line 4‑cylinder diesel In‑line 6‑cylinder diesel
Displacement 2.8 L (169 cid) 4.2 L (254 cid)
Firing order 1 ‑ 3 ‑ 4 ‑ 2 1 ‑ 5 ‑ 3 ‑ 6 ‑ 2 ‑ 4
Bore 94 mm (3.700 in.)
Stroke 100 mm (3.937 in.)
Rated engine RPM (refer to Conditions Affecting Operation
‑ Propeller Selection for additional information)
3800
Idle RPM in neutral (engine at normal operating temperature) 700 600
Oil pressure @ idle 2.4 bar [240 kPa] (35 psi) 2.1 bar [210 kPa] (30 psi)
Oil pressure @ 3800 RPM 6.2 bar [620 kPa] (87 psi) 6.6 bar [660 kPa] (93 psi)
Thermostat (water) 83° C (181° F) 89° C (192° F)
Thermostat (oil) 95° C (203° F) 87° C (187° F)
Coolant temperature 80–85° C (176–185° F)
Electrical system 12‑volt negative (–) ground
Alternator rating 1540W, 14V, 110 A
Recommended battery rating 750 CCA, 950 MCA, or 180 Ahm
Fluid Specifications
IMPORTANT: All capacities are approximate fluid measures.
Engine
IMPORTANT: You may need to adjust oil levels depending on the installation angle and cooling systems (heat exchanger and
fluid lines).
Always use the dipstick to determine the exact quantity of oil or fluid required.
2.8
All models Capacity liters (US qt) Fluid Type Part Number
Engine oil (with filter) 8.9 (9.4) 15W40 4‑cycle Diesel Engine Oil 92‑858042K01
Closed cooling system 11 (11.6) Mercury Extended Life Antifreeze 92‑877770K1
4.2
All models Capacity liters (US qt) Fluid Type Part Number
Engine oil (with filter) 13.8 (14.6) 15W40 4‑cycle Diesel Engine Oil 92‑858042K01
Closed cooling system 17.25 (18.2) Mercury Extended Life Antifreeze 92‑877770K1
Bravo Sterndrive Fluid Specifications—Diesel
Sterndrive Model
Fluid Capacity includes the
Sterndrive and the
Gearlube Monitor
Fluid Type Fluid Part Number
Bravo One X Diesel
Bravo One XR
2736 ml (92‑1/2 oz.)
High Performance Gear
Lubricant
92‑858064K01Bravo Two X Diesel 3209 ml (108‑1/2 oz.)
Bravo Three X Diesel
Bravo Three XR
2972 ml (100‑1/2 oz.)

Mercury 4.2 Diesel Specifications

General

Brand	Mercury
Model	4.2 Diesel
Category	Engine
Language	English