Dont bother diluting it or trying to figure any of that out. Just let the soap injector draw straight degreaser. Get the area nice and soapy. You can agitate with a brush if you want to after you put down the soap but that’s up to you.
Money left over, sure. Some. With Plan A and I have a power washer afterwards that should run for some time.
If it’s a residential driveway you probably don’t need degreaser unless You’re dealing with oil stains, but if thats the case theyre not comimg out anyways. Most driveways just have dirt and mildew on them. Use soap and bleach imstead of degreaser.
Do you have a specific mix?
Sure… Bleach and soap. As far as ratios it kind of depends on what you can get youre hands on. Chances are your small home owner machine may or may not have an injector so to keep it simple pour 2 gal of of 12.5 bleach in a 5 gal bucket. Add some soap then fill the rest with water. Pour some on the concrete and use a brush of broom to scubb it in. Then surface clean. If theres still mildew afterwards then just repeat the first step and domt rinse it off. Good luck.
Yeah probably. What is your guestimate on the job?
Idk. I don’t do flat work