Will installing LED lights on my NEW 2015 Honda Civic void the warranty?

Ok so, about 2 weeks ago I picked up a BRAND NEW '15 Civic from my local dealer, and some bulbs on my car are LED others are not. I was wondering that if I switched all my lights to LED if that would void the warranty/extended warranty? Being that the lights are "aftermarket". And also, can I use regular LED bulbs or do they have to be "CANBUS Compatible?" LED bulbs

How much can I get for a serious accident on the highway?

Me, my boyfriend, and my two kids (7 and 5 month old) were involved in a serious collision on the highway. A big HINO truck rear ended the car behind me and then my car that I was driving. The entire trunk of my Honda Civic is gone. My 5 month old has some hearing loss in her right ear. My daughter suffued a concussion and some damage to her teeth. Also, she has been acting a bit strange lately, hopefully there's no brain injury but that's something that we will investigate. My boyfriend has a pinched nerve in his back and is no longer able to work ( who knows for how long). I had to drop my courses at university due to a back sprain I can't finish the rest of the summer term. How much do you think we can get for all this? I mean no amount of money will bring back all of my baby's hearing or change the fact that my 7 year old had a concussion. We live in Canada the laws are different here.

What affect could this have had on my automatic transmission?

Ok so I was parked on a hill and the car engine was off, then without starting the car I shifted to reverse (I thought the car was on) and the car began to move backwards… My brakes were not working (because the car was 'off'), I then shifted the car to neutral as I was going backwards and then park - it is here where I heard a fast clicking sound and the car finally came to a stop. I drove around afterwards and everything was fine. By the way this is a 2012 honda civic LX automatic.

Speakers in car cut out at higher volumes? Sound is distorted?

Ok so I have a 1997 Honda Civic that's in good shape but the sound is trash. Anytime the the music is at a low volume it sounds fine but at meduim or high volumes the sound is distorted. I thought the speakers were the problem so I replaced the ones on the door but it sounded a little bit better but really about the same. What do I need to have louder speakers without the distorted sound? A new head unit? A subwoofer? A new amplifier?

3rd gear grinds? Replace gear box?

3rd gear grinds?
So I bought this '98 honda civic cx(213,000miles) and sometimes the 3rd gear grinds a bit. What would be the cause of it? Clutch slipping?

Also the steering wheel shakes when I broke after a certain speed(warped rotors or possibly wheel alignment is needed?)
And lastly when downshifting 5th to 4th gear I have to shift slow or else it grids.

What could be the problems in your opinion and how much would each cost

What happens if you put motor oil in your car what will happen?

I put an 1/8 of a gallon of a mixture of gas and oil into the gas tank of my 2008 Honda Civic and drove about 3 miles to a gas station. When I got to the gas station I only filled up with about another 2 gallons and then drove home. The car drove fine and I noticed no difference. How bad is this for my engine? If I drained my gas tank right now and filled it with gas would it be fine?