Quick Answer
Intake hole size is one of the most visible hardware variables, but it must be balanced with oil viscosity and leakage control.
Hardware Engineering
Larger intake holes can improve flow for thicker oil, but excessive intake area can increase leakage risk if the rest of the hardware is not designed around it.
- Intake size is a flow-control variable.
- Bigger is not automatically better.
- Oil-specific testing is required.
Flow path design
The intake opening controls how oil enters the heating area, but flow also depends on pressure balance, ceramic structure, and storage conditions.