Purple Power or ...

[Mangustaman]

My car leaks a lot , want to clean the undercarriage, have used Brakeleen
And pressure washer, bought Purple power, I have a gallon of OPC
What is the best and safest you think?

[radarryan]

I think that the consensus is that Optimum Power Clean is one of the best all purpose cleaners. It is known for being strong, yet safe, especially on sensitive materials such as leather or paint. Now, the drawback for using OPC is the price. Quite frankly it is one of the most expensive all purpose cleaners on the market.

That being said, it is also an APC that doesn`t use harsh chemicals and is safer to the user and the environment than many others. If that is important to you, then I would say that OPC would be the one to go with.

Now, since you have the Purple Power, I would start off with that, mainly because it is the cheapest. On something down and dirty, I want to use the cheapest all purpose cleaner/degreaser first, rather than the expensive stuff, like OPC.

Regardless of what you do, please remember the proper protective equipment and at the very least, gloves. If there are fumes please wear a mask or respirator. You don`t want to have the potential health effects that many of the chemicals can cause, especially when something as simple as gloves can protect you!

Happy detailing!

[Stokdgs]

+1 with above ...
If you have access to hot from the water heater water under pressure, that will always melt grease and gunk off and remove it without any chemicals....

While you are down there, how about fixing the leaks...

Dan F