Specifications

Indmar Marine Engines 6-5
Do not overfill. If your oil level is above the
full mark on the dipstick, the engine may be
damaged.
Indmar uses and recommends Pennzoil Marine 15W40
in all 5.7L, 6.0L and 6.2L (383) engines and Pennzoil
Heavy Duty 40W in all 7.4L (454), 8.1L (496) and 8.2L
(502) engines. This oil meets the API Service CI-4, CH-4,
CG-4, CF-4, and CF/SL. If engine is to be used in condi-
tions below 20 F (-7 C), use Pennzoil 10W30 meeting the
above API specifications. Note the special instructions for
the LS7 engine.
The use of engine oil other than the recom-
mended viscosity with an API SJ/CG4 desig-
nation can cause engine damage. Damage to
your engine caused by the use of improper
oils is not covered by your warranty.
Special Oil Instructions for Malibu LS7 Engine
Oil Requirement
The Malibu LS7 by Indmar oil requirement is different
than the requirement for any of our other engines. The
LS7 comes from Indmar filled with 5W30 Mobil 1 fully
synthetic oil. Indmar strongly recommends the continued
use of this oil for subsequent oil changes on this very
special engine.
Checking the Oil Level
The Malibu LS7 by Indmar is a unique high performance
engine with a dry-sump lubrication system. Since the
engine does not have a conventional oil pan like most
engines, the procedure for checking the engine oil is a lit-
tle different.
Do not check the engine oil cold. The engine must be
warmed up. Cold oil will not give a correct oil level read-
ing. After the engine is warmed up to at least 160°F
(72°C), shut off the engine. Checking the oil with the
engine running will result in an incorrect reading. Wait for
5 minutes (but not more than 20 minutes), to allow the oil
to drain and settle. Make sure boat is sitting level as pos-
sible. For convenience, Indmar suggests you check the
oil at the end of each session rather than the beginning
of each day as you would with a conventional engine.
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