Volvo Penta 3.0 GS, Operator'S Manual

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Synthetic Gear Lube. Fill through the oil drain plug location. Fill slowly to purge air. The drive unit is properly filled
when the oil appears at the oil level plug hole.
4. When filled to the proper level, install the oil level dipstick and oil level plug first (to prevent excessive oil loss), then
the oil drain plug.
5. Tighten oil level and drain plugs securely.
6. Install the rear cover and tighten screws securely.
If you cannot fill the drive unit through the oil drain plug, you can fill the drive by trimming it up a few degrees and filling
it through the oil level plug. Reinstall the oil level plug, and place the drive in the run (down) position. Remove the
dipstick and check the oil level. Reinstall the dipstick and tighten securely.
Check the oil level with the dipstick (oil must appear on the full range of the dipstick). Add oil if required through the
dipstick hole. Refer to
Specifications on pages 95 through 100 for drive unit oil capacity.
If the drive unit was filled through the oil level plug, wait 15 minutes before checking the oil level with the dipstick.
Leave the dipstick loose during the waiting period. This will help ensure all air is purged from the oil cavity.
Lubricating the drive unit (DP-S)
The drive unit is filled at the factory with Volvo Penta DuraPlus GL5 Synthetic gearcase lubricant. This lubricant must
be used when adding lubricant or refilling the drive unit.
Adding lubricant
Fully thread the oil dipstick into the oil level hole in the drive unit to properly check the oil level. An improper
oil level may result in serious drive unit damage.
Each week, check the oil level in the drive unit (if possible, without removing the boat from the water).
Make sure that the oil level comes to the top of the flattened portion of the dipstick.

The oil should be amber-colored.

The oil will appear milky if any moisture is present.

No metal flakes should appear in the oil.
If moisture or metal flakes appear in the drive unit oil, take the boat to your Volvo Penta
dealer.
If the oil level is low, add only enough lubricant to bring the oil level within the full range
of the dipstick. Improper oil level may result in serious damage to the drive unit.
You should completely drain and refill the drive unit at least once per season.
Draining the drive unit (DP-S)
1. Place drive unit in the run (down) position.
2. Remove propellers and mounting hardware.
Note: Special tools are required to remove Duoprop propellers. Refer to Propeller care on
page 77.
3. Remove the oil drain plug and the oil level dipstick.
4. Allow the drive unit to drain completely. Dispose of used oil according to applicable
environmental regulations.
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