Karl,
The Penetrol product I use is not really for thinning paint but is an oil
base paint "conditioner".  Adding a few ounces per gallon allows a longer
brush time, smoothes out brush lines and leaves an extra smooth finish when
applying paint with a airless sprayer.  It's made by the Flood company and
is available by the quart or gallon in most paint stores and hardware stores
that sell paint.
Other uses listed on the back of the can include applying to Fiberglas to
restore glossy finish.  One product, multiple uses.  Another excellent
product for "conditioning" latex based paints is Flotrol.  Same benefits as
Penetrol but keep from freezing as it will get lumpy.

Andrew

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM]On Behalf
Of Karl Wolz
Sent: Saturday, April 06, 2002 9:01 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Pop top Restoration--

Terry,

My dad tried this on his black fiberglass boat (I think it was when you
recommended it a while back) and really likes it.

There are two different products with that name.  One of them is a product
for thinning house paint, IIRC.  Anyway, make sure you get the right one.

Karl

----- Original Message -----
From: "Terry K." <CTONLINE@WEBTV.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Saturday, April 06, 2002 9:42 PM
Subject: Pop top Restoration--

> To all that have toiled, and have had short term fiberglass pop top
> shine retention---
>
> I used this on an old glass boat years ago, a product by the name of
> Penetrol----available at most Marine supply houses---
>
> This stuff wipes on with a rag, and the surplus residue, wipes off with
> another.
>
> That's it----
>
> The shine on a faded top is excellent, and it will last for a long
> time---
>
> I used it on a customer's Winnebago that was all chalked out awhile
> back---
>
> Wiped it on--wiped it off--and the gloss lasted for several years,
> before it was required again----
>
> Good, easy to use, simple solution, for a common problem, on a
> Westfalia---
>
>
> Later,
>
>             ______________
>            |[  ] [  ] [ ]\
>            |    |    |    |
>      ~~~ ~||-(())----(())-|
>
> Terry--
>
>        "Zoom, Zoom, Zoom"
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
> http://community.webtv.net/CTONLINE/TerrysHighOnLife
>