Quote:
Originally Posted by Binny
True that. And I think these days the above two are priority over everything else. Economy figures on the label are king. I'd say as long as the engine will last until the end of the warranty they don't care if a higher viscosity protects it better. Whether it lasts until 110k or 300k is not their concern.
Usually its the transmission or electronics gremlins that will put a modern vehicle off the road and uneconomical to repair these days anyway with the expense of DSGs, CVTs etc.
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That would be a common perception but not necessarily a correct one. Modern, low viscosity oils not only improve fuel consumption but also have to provide better protection against engine wear for longer than older, thicker oils.
The one proviso is that the engine is designed for the oil. It probably wouldn't be a good idea to use a low SAPS diesel oil in an older V8!