Originally Posted By: lars11
well, maybe it will work. However, this is one application where I wouldnt try to outsmart the manual at all. Note Volvo's intensity in recommending only Volvo OR SHC and nothing else.
In the steering servo or engine, Volvo recommends its own (of course) or "any dexron" or in the engine API SH... quite open recommendation, right?
But in the drive, ONLY Volvo full synth OR the Mobil SHC. That's no joke.
I agree with you here. However, my manual is rather specific on engine oil, stating never to use a multi-viscosity oil, ONLY SAE 30. This seems about as backward as it gets, but who am I to question? Seems 75% of boaters ignore that advice.