However, the makers of WD-40 didn't say their product could replace the engine oil in a combustion engine, despite the product containing lubricants and anti-corrosion agents. For starters ...

And then there's WD-40, a putative fix-all that boasts ... But a better product for reanimating a stubbornly seized engine is Marvel Mystery Oil, a mixture of naphthenic hydrocarbons and mineral ...