Engine Oil - Mercury 8.2L MAG/H.O./SeaCore Sterndrive Operation And Maintenance Manual

Propeller shaft power
Displacement
Alternator amperage
RPM
Idle RPM
Minimum oil pressure
Thermostat
Timing at idle
Firing order
Minimum battery rating
Spark plug type
Spark plug gap

Engine Oil

For optimum engine performance and maximum protection, use the following oil:
Application
All MerCruiser engines
IMPORTANT: Lubrication requirements for catalyzed engines differ from the requirements for noncatalyzed engines. Some
marine‑grade lubricants contain high levels of phosphorus. Although these high‑phosphorus lubricants may allow acceptable
engine performance, exposure over time will damage the catalyst. Catalysts damaged by lubricants containing high levels of
phosphorus may not be covered by the MerCruiser Limited Warranty.
If Mercury/Quicksilver 25W‑40 Synthetic Blend Engine Oil is unavailable, use the following lubricants, listed in order of
recommendation.
1. Mercury/Quicksilver 25W‑40 Mineral NMMA FC‑W Catalyst Compatible.
IMPORTANT: If you are servicing a catalyst engine, use the following oils for short periods of time only.
2. Other recognized brands of NMMA FC‑W Catalyst Compatible rated 4‑cycle oil.
3. Other recognized brands of NMMA FC‑W rated 4‑cycle oils.
4. A good‑grade, straight‑weight detergent automotive oil according to the last row of the operating chart below.
NOTE: We do not recommend nondetergent oils, multi‑viscosity oils (other than as specified), non‑FC‑W rated synthetic oils,
low‑quality oils, or oils that contain solid additives.
90-8M0128976 MAY 2017
eng
Hot
Cold
WOT
Rev limiter
Mechanical
DTS
At 2000 RPM
At idle
Non‑DTS models
DTS models
Recommended Oil
Mercury/Quicksilver 25W‑40 Synthetic Blend Engine Oil, NMMA FC‑W Catalyst Compatible rated
Section 3 - Specifications
8.2 MAG
279 kW (380 hp)
8.2L (502 cid)
72 A
65 A
4600–5000
5150
650
207 kPa (30 psi)
103 kPa (15 psi)
76 °C (170 °F)
Not adjustable
1‑8‑4‑3‑6‑5‑7‑2
750 CCA, 950 MCA, 180 Ah
800 CCA, 1000 MCA, 190 Ah
NGK BPR6ES
0.83 mm (0.033 in.)
8.2 MAG H.O.
316 kW (430 hp)
5150
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