For proper maintenance, safety, and maximum fuel economy, you must always maintain recommended tire inflation pressures and stay within the load limits and weight distribution recommended for your vehicle.

All specifications (sizes and pressures) can be found on a label attached to the driver's side center pillar.
Tires and Wheels
Recommended Cold Tire Inflation PressuresHyundai Elantra AD (2016-2020) Owners Manual: Brake/Clutch Fluid
Checking the Brake/Clutch Fluid Level
Check the fluid level in the reservoir periodically. The fluid level should be
between MAX and MIN marks on the side of the reservoir.
Before removing the reservoir cap and adding brake/clutch fluid, clean the area
around the reservoir cap thoroughly to ...
Hyundai Elantra AD (2016-2020) Service Manual: Front Oil Seal Components and Components Location
Components
1. Front oil seal
...