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    full synthetic 10w40

    Just wanted to chime in on the actual recommended oil for your engine. There was a lot of confusion after Volvo discontinued their straight 30 syn oil. At first the seemingly clear message was that now Volvos 10w-40 was the recommended oil for all engines. I have a 1999 5.0 Gi, so basically...
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    Syn 5w40 (Shell T6, Delo) for a gas marine engine

    Thanks DuckRyder for the thoughts. -I cruise at pretty much 2600-3000rpm, I never gun it to WOT. WOT for this engine is 4800RPM. -The cooling system is a raw-water cooled system, thermostat rating for operating temperature on this boat is 160-165. I mostly run in fresh water, sometimes a...
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    Syn 5w40 (Shell T6, Delo) for a gas marine engine

    This is would be in use for a 1999 Volvo Penta 5.0L GI (Throttle Body Injected EFI) I know a lot of people that swear by the conventional Rotella 15w40, but I have been running synthetic Straight Weight SAE30 (per manual) since the boat was new (just passed 600hours). Volvo Penta then...
  4. E

    Syn 5w40 (Shell T6, Delo) for a gas marine engine

    This is would be in use for a 1999 Volvo Penta 5.0L GI (Throttle Body Injected EFI) I know a lot of people that swear by the conventional Rotella 15w40, but I have been running synthetic Straight Weight SAE30 (per manual) since the boat was new (just passed 600hours). Volvo Penta then...
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