I've been using the Zep Citrus lately at about 3 to 1, or 4 to 1 (1 part Zep to 3, or 4 parts water) and the product seems to be a good basic all around cleaner, around the house, on the vehicles, etc.
Not too strong at those dilutions to harm anything, yet still OK on greasy pots and pans as a pre-treat before washing. OK on tires, wheels, engine, etc, unless the engine is really filthy, then maybe a 1:1 mix.
It's been a good alternative to products like simple green which I no longer like.
The boys here have brought up another truly good product, available at the Dollar Trees, called LA's Totally Awesome", at a buck a bottle, both concentrate, and a pre-mixed Orange Citrus APC, with Oxy Clean in it.
I like them both! Bravo!
Mark