I have to say that from experience (not with this specific product but others in the family) that the atomizer spray helps in minimizing the amount of product used. I definitely would love to see a side by side between it and another "booster" to compare cost/use, or cost/oz/use. It may turn out that the little 8oz can do a lot more than we think.
:iagree: having a fine mist atomizer really makes the difference.
BUT.... one little puff-o-wind and it's all gone to the 4-corners of the earth.
That however with using suede applicator cloth(s) (aka CarPro/cquartz method) SERIOUSLY helps cut down on the amount of product used per application over and above the yellow foam applicator.

rops:
If one bottle of PBL can do more than ten cars, why not reapply instead of using any boosters? I coated my ride in November, so by spring I'll do a little cleanup and coat again.
One bottle will never do more than ten cars IMHO. With only 4 ounces to work with and following recommended methods I'm not sure you'll get more than 4 or 5, tops.
"
For paint, 3-4 sprays of Diamond Paint Coating is all that’s required to coat a panel (a hood is considered two panels)."
Considering 8 pumps on the hood, 8 to 10 more on the roof, 4 each on the front and rear bumpers, 4 on the trunk, at least 12 per side and you're easily up to 40 pumps. That is a LOT of product!
FWIW in the three applications I got in before it got too cold I tried to use the bare minimum I could get away with while making sure that the panels were covered well enough to visibly see the product 'flash'. Even so I'd say up to ¾'s of an ounce on a small 2 door coupe not counting what you'll use to the wind blowing, (
which is why I'd recommend ALWAYS applying indoors) is the minimum you'll get away with. Keep in mind that when using the yellow foam applicator it'll hold it's own fair share of product a well.
(
Perhaps I could pull a sprayer out and measure what the output of 40 pumps is to provide a more definitive answer, but I'll still stand by at least ½ an ounce (plus wind loss) no matter how you cut it.)
With that in mind I'd be more likely to use the 'booster' as the cost per application is much less than the original. Then considering the "synergistic compatibility" between it and the base product(s) it seems that it's more designed to help 'fill in' what may have been lost (to the elements) since the original application. (Thinking that once the base carrier has evaporated that it'll bond/link to the coating and make as a single layer.) :xyxthumbs: