Your car’s air conditioning system, you love it, you depend on it, so if you don’t want to find yourself sweltering in the summer heat, maintain it.
The rule of thumb is to have your vehicle’s A/C unit checked by a trusted mechanic once a year BEFORE anything goes wrong...and there are several things that can go wrong.
If your A/C is blowing less cold air than it used to, that could signal a couple of things. It may just need to be recharged with more refrigerant. Your mechanic can recharge the system to levels specifically for your vehicle to have it blowing icy cold again.
Typically, he or she will also test the system for leaks. A leak could be coming from your A/C line or from the compressor. A line leak is easy enough to fix, but if it’s your A/C’s compressor, it could be a leak or a complete fail if the oil in it has depleted. If it is the compressor, you’ll need to have it replaced
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Q. My comments and questions are about antifreeze. Some say it lasts two to three years when you buy a car new. Some say you can extend that to five years or 150,000 miles. Then others recommend a heavy-duty extender to 400,000 miles. I need help here.
I have been taking care of my cars since I was 16, back in 1962. I have learned throughout the years, while living through antifreeze shortages, that you can extend the life safely.
I have extended it in my 1998 I30T Infiniti with the standard ethylene glycol antifreeze. I know they have made antifreeze improvements over the years, making it last to 150,000 miles. What I do is add rust inhibitor every-other year. The car currently has 220,000 miles, and the antifreeze was changed at 200,000 miles when the car was 14 years old.
I am now doing the same thing in my new 2007 M35x Infiniti. It has 80,000 miles and I have just begun adding rust inhibitor every two years. I do the same thing to my wife's 2008 RX
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