How common was the headlight cleaner option? Page S38 of the 1993 Workshop Manual. I have been taking to a couple of people doing a water injection system and I think the tank would be a good candidate to hold the water/alcohol mix. I am looking for the part number of the larger tank that is in the back hatch area when the headlight cleaner was an option. If anyone has a tank, how much does it hold. Also does a low fluid light come on in the dash?