What hypoid is he running?
The thinner the more whining.
As the hypoid spockets are submitted to increased load the whining is intensified - normal gearing sound.
The best hypoid that I have tested is:
- omega 690 80W/90
The worst is:
- VW G50 75W/90 fully synthetic "water"
>>Quaker State / Spectro 80W/90 was ok.<<
Mineral hypoids are more quite that synthetic.
Old /worn-out oil causes more whining than fresh/new oil. Service intervall is about 10 000km on the oilheads (BMW claims differently...).
If you want a good reference on whining engines... BMW K100 1984 -
Could hear the cops comming blocks away -
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Drive Safely,
Albert
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