Quote:
Originally Posted by Triple Jim
In the Kaw triples world, there is evidence that synthetic oil does not protect internal engine parts from rust during storage as well as dino oil. We've seen rusting of crank bearings, for example. It's not conclusive, but there is a fair amount of anecdotal evidence.
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Never heard that.
That would be more of an issue with the additive package (corrosion inhibitors) than the oil itself.
I've stored engines in damp environments for years with fresh synthetic, and after pulling a valve cover and inspecting the cams found them to be rust-free.
Some oils have more rust inhibitors than others - conventional or synthetic.