26 year old garage floor prep

[eppyhonda]

First of all I want to state how great this site is and I have done a lot of research in here for my garage remodel. Here's my issue:
I recently moved into a home built in 1981 and the previous owner was quite the wrencher (not necessarily a good thing though). I am preparing to do an install of two Supercoat Super Kits on my 400 square foot garage. The floor is covered in oil stains, rust stains, and other greasy spots all over, I mean nearly the whole floor is a mess. I think I'm gonna go buy a gallon of Pour-N-Restore which from my research seems to be the best stuff to really pull out the grime and oil. I will be spending about $200 on the epoxy kits and prep as it sits now (with $40/gallon Pour-n-Restore and acid etching before application) and that is my limit, the better half is gonna shoot me if I spend any more! Does anyone have any suggestions on a better way to make my floor ready for the epoxy. I'll see about getting some pics of the floor to show you what I mean by "whole floor".
Thanks in advance guys

 

[dawg]

without pics its hard to tell what youll need but if the floor was anything like mine was youll need a real concrete cleaner (quikcrete made my cleaner)
then follow up with muratic acid (best if used in a 50/50 ratio for really bad floors).
I did the acid treatment twice then followed up with a good power washing.
my floor was like new and after drying it was ready for epoxy paint.
(use the oil based 2 part epoxy)
water based doesnt seem to hold up to well to chemicals and hot tire pickup.
IMO

 

[eppyhonda]

Re: 26 year old garage floor prep W/PICS

This is what I'm working with, looks worse in person

 

[mhoffm911]

I agree that a powerwasher is going to be necessary in your case. I would do the following:

1. Powerwash
2. Simple green wash down with deck broom
3. Patch holes with epoxy or mortar based filler
4. Powerwash
5. Muriatic acid etch
6. Rinse
7. Muriatic acid etch
8. Rinse / power wash (let dry for at least 3 days)
9. Coat with epoxy and enjoy

By the way, I have done a great deal of research on Supercoat and Rustoleum Professional (while trying to decide which one I am going to use). I keep getting drawn back to Supercoat based primarily on where they come from (industrial grade materials from Cass polymers).

Please post photos and comments when you are finished.

P.S. I have seen other posts talk about using Cascade or Tide on the oil spots and scrubbing with brush with fair amount of success. This may be cheaper than the $40 bottle of Pour-N-Restore.

 

[eppyhonda]

is it a bad idea to acid wash, then degrease? I don't know if this would help the degreaser get down in the concrete better or cause the surface to breakup or something not so spectacular. Any thoughts?