Can anyone recommend me a good, decent car wash shampoo? I read about brands like meguiars, optimum, etc but I'm afraid their price is a bit steep for me. Any good brands you can buy from the car section of a supermarket?

Just got my new axia (which explains my budget) and plan to DIY on car washes to prevent scratches.

Guys, wanna ask, how long is the shelf life for ONR? Does it have an 'expiry date' or something?

Considering buying a gallon of ONR but dont wantany of it to go to waste since I wash only once a week, otherwise I'll just buy the small bottle.

Guys wanna ask, just now I waxed my black car by hand and by the time I was done, the yellow foam appliacator pad turned black. What causes it to do that? I clayed my car before waxing it.

I was using meguiars nxt gen 2.0 wax.