Tire pressure monitoring system. TPMS
A tire-pressure monitoring system (TPMS) is an electronic system designed to monitor the air pressure inside the pneumatic tires on various types of vehicles.
 TPMS report real-time tire-pressure information to the driver of the vehicle, either via a gauge, a pictogram display, or a simple low-pressure warning light.
TPMS are provided both at an OEM (factory) level as well as an aftermarket solution. The target of a TPMS is to avoid traffic accidents, reduced fuel economy and increased tire wear due to under/over inflated tires through early recognition of a dangerous state of the tires.
It is recommended for some TPMS to use nitrogen instead of regular shop air, based on the fact the nitrogen it doesn't support moisture when r shop air under cold weather creates some frost, effecting the reading of TPMS.
Most of the tire shop will charge to fill up the tire with nitrogen.

How to boost a dead battery.
Step 1: identify the power and ground side , on each battery or power source.
Black or negative sign (-) stand for the ground.
Red or positive sign (+) stand for the power side.
Step 2: connect the booster cable, by connecting the cable to the dead battery first.
It is important not to let the positive cable touch the negative cable. Always keep them apart.
After you... connect the power side to the active power source (battery, car, charger).
Last cable to connect should be the ground cable (-).
You might see a small spark. Ignore it .Except if you see big spark, or smoke with heat. That would mean you connected something wrong. In this case disconnect the cables and recheck.
Step 3: if you are boosting a dead battery from another car, make sure the car you are boosting from is running. All accessories (radio, blower motor, heat, lights, etc) must be off. Rev up the engine up to 2000 rpm, wait 1 to 2 minutes, then start the dead car.
If you are using another loose battery, follow the same procedure to connect the cable. You don't have to wait you can start the car immediately.
There are many different kinds of battery chargers. You must give your charger time to charge the dead battery. 15 amp battery charger could take 15 minutes or more to charge a dead battery.


   Can someone use regular gas instead of premium?
First of all check what kind of fuel your car takes.
If it requires high octane gas you can not use regular. Even if you think, you will be saving 10 cents or more per litre. Reality is, your engine will run and fire in retard mode. Your car won't preform the way it should.
You will notice valve ticking, and since most of the new engines have knock sensor, you will have check engine light on as well.
Fuel consumption will definitely be more. You will those 10 cents you were you have saved before.
For those who believe that filling up a car, that requires regular gas, with premium gas, will make it go faster, and run better , you are wasting your money. Feeding a donkey hay or cake will never turn him into horse.