I believe glycol is used in anti-freeze.
I really enjoy Nano Spray Wax and like the vanilla-like smell. It gives an awesome gloss, slickness and does hide minor cobwebbing effects. It is a piece of cake to use - no smears, just spritz lightly buff, flip towel and finish off. The surface needs to be in good shape in order to have no issues when applying. I use it after every car I wash for people as a change from the Wax As U Dry and Mothers FX Spray.
I used the Nano Protectant. I bought it from EO because I can't get it locally. Reminds me exactly of 303 - matte, factory fresh finish and can be used on leather too. It has light, light cleaning abilities, a nice fresh scent and leaves no residue or greasiness. I like it because it is a one stop product for every surface of an interior. Soiled interiors require a cleaning first before applying the Nano. It can smear on smooth plastic but a dry, clean MF will buff it off.
I used it on the interior of 2 BMW's (my parents) and was very, very satisfied. If you like 303 on your interior, you'll like Nano as a readily available OTC protectant. But for some reason, none of the stores by me carry it but everyone else seems to be able to get it.
For $10 combined for two products, you'll definately be satisfied.