Some engines (mostly fancy ones, non-volvo) do require very specific oils, using the wrong one can ruin such an engine within 1000 miles in worst cases.
What engines spring to mind ?
Certain Porche, probably Ferrari etc, I doubt this affects many of us here.
Engines with Nikasil-lined bores. Usually expensive ones ! I seem to recall that BMW had problems with these in the past ? By now probably mostly knackered old bangers, unless someone knows better.
VW PD diesel, 1.9 tdi with injectors driven by the camshaft. A non PD oil will wreck the head in a matter of weeks, regardless of how fancy the oil is otherwise. Obviously some special additive in the brew to cope with extreme pressures. Doesnt smell like gear oil. It stands to reason that PD oils are of a high spec and will provide good lubrication to most engines.
Sensible, knowledgeable comments please.
__________________
1994 850 2.0 bought at 32,000 miles used daily now 45,000. Still like a nearly-new car 
2004 filthy polluting diesel VW
|