Penetrol is magic stuff. I use it on fiberglass bumpers and as a penetrating rust protectant when mixed with mineral spirits. 

Chris

Dnia 12.08.2017 o godz. 14:40 Stephen Grisanti <bike2vcu@YAHOO.COM> napisał(a):

> I don't need another device in the house so use Soft Scrub, a scrub brush and a Scotchbrite pad, and give it a coat of Penetrol to bring out the grey's shine. This gets done every other year or so, or when I can't stand the grime any longer. Parking under oaks does not help. 
> 
> Stephen
> 
> Mobile
> 
>> On Aug 12, 2017, at 2:29 PM, Edward Maglott <emaglott3@GMAIL.COM> wrote:
>> 
>> this is a consumer level electric karcher brand.  says max 1650 psi.  I
>> like the nozzle that "swirls".  Like it is a powerful stream but it spins
>> around in a circle pretty fast.  I did a little testing and it seemed to
>> leave the fiberglass smooth.  I just don't want to damage it obviously.  if
>> not pressure washing, what have folks had success with cleaning it?
>> Thanks,
>> Edward
>> 
>>> On Sat, Aug 12, 2017 at 1:41 PM, <JordanVw@aol.com> wrote:
>>> 
>>> depends on pressure setting and nozzle.  ive seen pressurewashers that
>>> have lifted fiberglass strands right out of thin gelcoat
>>> 
>>> 
>>> 
>>> 
>>> In a message dated 8/12/2017 1:39:47 P.M. Eastern Daylight Time,
>>> emaglott3@GMAIL.COM writes:
>>> 
>>> or will that damage it?
>>> Thanks,
>>> Edward
>>> 
>>>