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Mercury TDI 4.2L User Manual

Mercury TDI 4.2L
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Section 3 - Specifications
90-8M0114081 eng DECEMBER 2015 Page 31
Only premixed, coolant should be added to the closed‑cooling system. Additives and inhibitors introduced into acceptable
coolant solutions will form a protective film on the internal passages and provide protection against internal cooling system
erosion.
Do not drain the closed‑cooling section for storage. The closed‑cooling section should be kept filled year‑round with an
acceptable antifreeze/coolant solution to avoid rust forming on the internal surfaces. If the engine will be exposed to freezing
temperatures, ensure that the closed‑cooling section is filled with a properly mixed antifreeze/coolant solution to protect the
engine and closed‑cooling system to the lowest temperature to which they will be exposed.
NOTE: It is recommended that a 50/50 solution of coolant (antifreeze) and deionized, purified water be used. A 50/50 solution
will provide freeze protection to –35° C (–31° F). Decreasing the solution to 40/60 will provide freeze protection to –25° C
(–13° F). Even in the warmest climates, never decrease the solution below 40/60. Increasing the solution to 60/40 will provide
freeze protection to –50° C (–58° F).
IMPORTANT: The antifreeze/coolant used in these marine engines must be a low silicate ethylene glycol, containing special
additives, and deionized, purified water. Using other types of engine coolant may cause fouling of the heat exchangers and
overheating of the engine. Do not combine different types of coolants without knowing that they are compatible. Refer to the
coolant manufacturer's instructions.
The acceptable antifreeze/coolants is listed in the following table. Refer to Section 5 Maintenance for respective change
intervals.
Description
Availability Part Number
Marine Engine Coolant Worldwide 8M0078028
Engine Oil
NOTICE
Discharge of oil, coolant, or other engine/drive fluids into the environment is restricted by law. Use caution not to spill oil,
coolant, or other fluids into the environment when using or servicing your boat. Be aware of the local restrictions governing
the disposal or recycling of waste, and contain and dispose of fluids as required.
Engine oil must be 5W‑30 viscosity, and meet VW Standard 504 00/507 00.
We strongly recommend the use of:
Description
Where Used Part Number
5W‑30 (1 L) Engine crankcase 8M0069603
5W‑30 (4 L) Engine crankcase 8M0069602
Engine Specifications
Description
Specification
Engine type V8 diesel
Displacement 4.2 L (252 cid)
Firing order 1‑5‑4‑8‑6‑3‑7‑2
Bore 83.0 mm (3.27 in.)
Stroke 95.5 mm (3.75 in.)
Rated engine RPM (refer to Conditions Affecting Operation
—Propeller Selection for additional information)
Refer to Performance Curve and Data Sheet TDI (available
at www.mercurymarine.com/engines/diesel/)
Idle RPM in neutral (engine at normal operating temperature) 650 RPM
Oil pressure at any engine
temperature
750 RPM 152–310 kPa (22–45 psi)
3800 RPM 345–556 kPa (50–80 psi)
Thermostat Water 70° C (158° F)
Coolant temperature 70–85° C (158–185° F)
Electrical system 12‑volt negative (–) ground
Battery* 750 CCA, 950 MCA, or 180 mAh
Alternator 120 A
*Battery manufacturers may rate and test their batteries to different standards. MCA, CCA, Ah, and Reserve Capacity (RC) are
the ratings recognized by Mercury Marine. Manufacturers that use standards different than these, such as equivalent MCA, do
not meet Mercury Marine battery requirements.

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Mercury TDI 4.2L Specifications

General IconGeneral
BrandMercury
ModelTDI 4.2L
CategoryEngine
LanguageEnglish

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