3 ms·
Engines are lubricated almost immediately. The oil pump is typically camshaft driven, so it's only a matter of seconds before everything is lubricated. In addit
by ragingrobot 5y ago
Engines are lubricated almost immediately. The oil pump is typically camshaft driven, so it's only a matter of seconds before everything is lubricated. In addition, modern oils tend to "stick" to parts better and don't drain off as easily. It takes quite some time before they're completely dry.
As far as the material, at one time engines had components of various materials. Blocks of cast iron, heads or intake of aluminum. Now as you state, they are mostly aluminum. While it may expand more than steel, the majority of the components are going to expand at the same rate, unlike in the past.
- Lanolderen 5y agoOils are definitely better but I really don't believe the marketing in winter. At low temperatures even modern oil has high viscosity. Combined with tight bearing clearances I firmly believe in waiting a bit to be sure everything is nicely coated. Maybe I'm just paranoid from horror stories of dudes getting on their bikes and ragging them right off the bat, seizing the engine. I mentioned the aluminium mainly because piston slap came to mind. More slop, more slap. It's better than everything twisting though.
- landemva 5y agoI use full synthetic engine oil for cold weather startability, primarily.