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iwhat does the noise sound like. most likely a worn belt or belt tensioner if its a high pitched squealing noise.
When refilling the oil some may have dripped onto the belt which would cause it to start slipping badly and squealing loudly.
If you attempt to start your car and a 'whistle' noise is likely the Bendix on the starter spinning, spinning very fast because it has not come out of the it's housing and meshed with the flywheel gears. "Bendix" is a brand name for the starter drive.
Sounds like a slipping alternator drive belt. Adjust in accordance with manufacturers instructions.
Start with the most likely andeasiest to fix. Check your brake pads... There is a wear indicator on the inside pads (closest to engine) that will rub on the rotor and make a squealing noise to warn you that the pads are getting thin. When you apply the brakes the noise will go away a lot of the time. If the pads are new or not making the noise then I do not know what the problem may be.
You may need to adjust your belts, check the ac belt first.
Serpentine belt. If its cracked, frayed, or worn replace it before it breaks or you're in for a hefty repair bill.
Get your engine belt replaced it is loose or worn.
i would take a good guess that when the starter is engaged through the sylenoid that it is sticking and when you go to shut it off it stays engaged
check your belts they can be worn and need to be replaced or they just might be cold unless its everytime you start the car if that's the case the might need to be tightened your ac belt or fan belt could be bad.
I have no idea what you mean by "brake life is at 10," but there is a way that I always know when to replace my brake pads. When brake pads wear down quite a ways, a metal clip will start to touch the rotor when you apply the brakes. It will cause a very loud squealing noise (metal clip on metal rotor), and it means that it is time to replace your brakes. It was designed that way. Once you hear the squealing, you can drive like that safely for weeks or months, but the squealing noise will be very irritating. If "brake life is at 10" means that you only have 10% of your pads left, then you should change them.
Your question is vague, but since you used the words "squealing/grinding" I first start to look at the brakes. The squealing could be coming from your brake pads. Some brake pads come with a safety mechanism that alerts to when the brake pads are nearing replacement time. If you ignore that squealing then it turns to a grinding because there ain't no brake pad left. At this point, you're now looking at replacing the rotors as well as the pads. Rule of thumb is that if one side is bad then the other is just as bad or not far behind it.