It's time to re-gas the A/C system of my Hyundai Veracruz. Is it a good idea to use an air-con gas top-up kit that I could buy from an auto shop? Is this safe and effective? What could be the downside?
Before you re-gas the air-conditioner of the vehicle, the moisture and contaminants in the system should first be removed. The air-con pipes and system components should be cleaned out and serviced properly. If you don't have the experience or the technical know-how in car air-con service, then using a top-up air-con gas kit would not be your best option. It would be risky. It would be better and safer to have this done by a car air-con specialist or auto service facility to make sure that the vehicle's air-conditioning system won't only be refilled with the right type of refrigerant but will also be cleaned, free from moisture, dirt, and other contaminants.
How much gas should I use to top off the air-conditioning of my vehicle? Is it the same for all?
Not all vehicles require the same amount of refrigerant for their air-conditioning system. This varies not only per brand/make or type of vehicle but also per model and year. The gas or refrigerant is typically measured or metered through weight. As such, a small car may require less compared to a full-size vehicle, whereas as a luxury vehicle that's equipped with a climate control feature may need more gas. The vehicle manual should serve as a guide.
What's the average lifespan of brake parts such as pads and rotors?
There's no definite number since the service life of brake parts like the pads and rotors depend on a number of factors. The list includes the driving style or pattern, the road condition, the weather and temperature in the area, the traffic or driving situation, and the type of brake pads and rotors used. If the vehicle is used more often or driven in a stop-and-go traffic, the brakes will naturally wear out faster. If the driver does a lot of hard braking instead of decelerating gently, then the brake pads and rotors could have a shorter service life. But while the expected service life could vary, most manufacturers and brake specialists would say that brake pads could last somewhere between 30,000 and 70,000 miles. Some would put the average lifespan at 50,000 miles. Rotors, meanwhile, last longer. It could take about three brake pad changes before you'll have to replace the brake rotors of the vehicle.
Would it be safe to use an old brake kit and transfer it to another vehicle?
Brake systems not just vary per make and model but also per model year. As such, brake calipers and other brake parts such as the rotors and brackets may not be compatible to the brake system of another vehicle. Incompatible parts can undermine the brake system performance. It won't be safe. While the old brake kit can be used on a vehicle of the same make, model, and year, this won't be highly advised as some parts in the kit may already be wearing out and may not provide optimum braking power and efficiency anymore.