9 Rules for Dating a DSM Guy:

1 - Do not touch anything on the car without asking permission. If you get
permission, dont break it.
2 - Do not ask what every sound is, even if you think it sounds funny.
3 - When his friends are in the car, be prepared to get squished into the
back seat, because you're the "smallest"
4 - If something breaks, get a good book/magazine, a comfy lawn chair, and
wear lots of sunscreen and bug spray.
5 - Don't expect him to treat your car with the same respect he treats his
own.
6 - Your gift list for him will be a long list of car parts you have never
heard of.
7 - Get used to driving fast, with the windows down, with only the sounds of
the turbo.
8 - Dont tell him that his hands are dirty. He already knows and he likes it
that way.
9 - You will get pulled over while you're in the car with him. Don't worry,
he's done this before.

That was enjoyable.

I will add one:

Don't automatically assume that because he is always working on his car that it's because it is broken, the truth is he just wants to make it faster!

LOL Not bad.

I'd add the : If you're going to wear girlie belts with a whole bunch of metal doodads...DON'T LEAN ON THE CAR!

truth is, hes just giving his loved one some affection

One from me:
Do not tell him the car is too bumpy and not the fastest car you ever been in.

and if she does, the EJECT button WILL be used!!!!

She must be aware that the vehicle is equipped with a turbocharger, for safety reasons she is to remove all tight fitting garments.

I changed to 10 rules and posted it on the fridge. My wife like the tight fitting garments one

this would be handy! There is an dummy switch bellow defroster switch (on 2g). Quick and easy access!

If he's in a bad mood, chances are, it's not you. Take comfort in that and let him fix his car.

Just because there is no A/C does that mean you get to put your foot up on the dash. Keep it on the floor, I don't want to clean foot prints off the wind shield, or explain to my friends why your foot prints are there...

haha