recommendation on good degreaser for engine, chassis, etc?

[TWFAUST at aol.com]

I had a few inquiries about B52, so I took a look at a bottle. It is  
manufactured by Hollander Corp. Here is a link.
_http://www.hollandercorporation.com/index.php/a11-spray-bottle-6.html_ 
(http://www.hollandercorporation.com/index.php/a11-spray-bottle-6.html) 
 
After the first spray bottle, I started buying it by the gallon to refill  
the bottle, about $16.00. Their site recommends a dilution of 3 to 1 with 
water  for "heavy grease". Can't say, I had never thought to dilute it. 
Knowing that, I  may start running it in my heated parts washer.
 
The site says "non caustic" and "bio-degradable", so it should be safe on  
aluminum. No idea of effectiveness on thick brake dust. I was responding to 
the  question about cleaning suspensions.
 
Tom Faust