2shiny
New member
There has been a lot of bashing on the AutoFinesse Avalanche lately, because some have taken a pH test and Neat is has a pH of 12, diluted in the foaming bottle it has around pH10 and it touches the car at a pH around 9. So they have been bashing this product for not being LSP-safe.
Being a Chemist from education, I know there is a lot more to it then pH, as in which is the buffering capacity, does it involve strong or weak acids, what detergents are used in a product,...?
A quote from Dr. G from Optimum regarding this matter:
and from a Master in Biochemistry:
So we can say that a pH neutral product is important for lowering the risk of injuries when it comes in contact with the human skin, but that's about it. Being pH low or high doesn't increase it being less LSP-safe.
A good example here is Dawn soap. This is pH neutral, so it is gently to the skin, but kills grease with ease...
So I decided this was up for a test
I decided to test it with real waxes, sealants and AIO.
Later I plan on adding some tests with different snow foams and shampoo with pure carnauba flakes...
For this test, following products were used:
Wolf's Chemicals Full Moon, Wolf Moon and Quickie
Poorboys World EX-P
Autoglym SRP
Meguiars Dark Wax
Turtle wax Nano Tech and Natural Extracts
Commandant Cream wax
I tried including some strong waxes and some “ weaker” ones from OTC ( borrowed from the neighbour, who told me to try them a few times
)
These were all applied like this on all 4 door of the car.
The Test
The surface was sprayed with water to see the initial beading of the wax.
Then it was covered in foam and left to dwell for 10 minutes, rinsed down and beading was inspected again.
We did this 3 times and came up with the following results:
Full Moon:
Ex-P:
Dark Wax:
Turtle Wax Nano Tech:
SRP:
Wolf Moon:
Being a Chemist from education, I know there is a lot more to it then pH, as in which is the buffering capacity, does it involve strong or weak acids, what detergents are used in a product,...?
A quote from Dr. G from Optimum regarding this matter:
pH is actually base 10 logarithmic scale so for every 10x dilution, it changes by 1 point and 100x dilution will change it by 2 points toward neutral pH (7.0). Once pH is 7.0, additional dilution will not change it anymore.
In general pH of 6-8 is considered neutral which is the pH of Optimum Car Wash. What removes lsp is more dependent on detergency and less on pH. Higher concentration of surfactants will also increase their detergency. Basically, soaps are a combination of surfactants which include cleaners, foamers, foam stablizers, and chelating agents. Cleaners are the main component of soap and depending on the type, they can have low, medium, or high detergency. Car wash soaps in general and Optimum Car Wash in particular, have cleaners with very low detergency that are high in lubricity. Foamers are added since consumers equate foam with cleaning and lubrication and there are no real benefits. Foam stablizers are added for the same reason.x
I am not sure why you are so focused on soap since polymer based washes such as No Rinse are much better in terms of cleaning and protecting paint from marring. Furthermore, No Rinse washes do not remove lsp but add additional protection.
David,
and from a Master in Biochemistry:
Biochem major here. pH is complex, but some are interested, so I'll try to explain acid based reactions. pH is part of the equation in predicting how an acid (or base) will react, but of at least equal importance are molarity (concentration), whether it's buffered (a buffer is something you add to a solution to help it maintain it's pH when other chemicals act upon it, generally more important with weak acid or bases), and contact (you can pour a gallon of anything on your car, but most of it falls off the car, and only the micro-layer touching the clear coat can react with the clear coat. Or LSP).
Electricity analogy - pH is the "voltage," molarity/buffer/contact/volume is the "amperage." You need both to do damage. I would argue that any car shampoo has neither.
Just a quick note about all of the above. Acid (or base) is finite. Once it reacts, it's gone. So for an effective acid reaction, you either need lots of it (molarity) or you need to continually replenish it (buffer and contact/amount).
Then there is the issue of what acid works on. Acids react better on inorganics than organics. In our world, inorganics are metals. Organics are things petroleum based - clear coat, sealants, waxes. Vinegar works well on water spots because they are inorganic - the residue left over by hard water (calcium, iron, magnesium, i.e. metals). However, vinegar would take forever to do much damage to an LSP. This is a complicated discussion also, but has to do with the same forces at work whereby water will dissolve road salt (inorganic metal), but won't dissolve your LSP (organic).
I would go further than Dr. G and say that anything pH 4-10 is essentially neutral. Even then, something like vinegar has a pH of 2.4, does that scald your skin? No. pH 2.4 isn't that crazy, plus vinegar has low molarity, is unbuffered, and not enough is going to stick to your skin to bother you. If you hold your hand in a large vat of vinegar, over time, you would start to feel some irritation. But you can't mimic that situation with your car, and your clear coat or LSP is going to be more impervious to pH than your skin.
So, you wash your car. Even a non-"pH balanced" shampoo has nothing going for it to disturb your clear coat or LSP. It has essentially neutral pH (by my definition), it has low molarity, it's not buffered, very little stays on your car, and what stays on your car is not there for long. Plus, acids don't react well with organics to begin with.
Anyway, I warned you it was complex, but in the end, this is why I could not care less what the pH of my shampoo is. If it's not acidic or basic enough to burn my skin, then the pH is negligible as it concerns my LSP or clear coat. As Dr. G mentioned, the surfactants in shampoos are going to dissolve LSPs far more than any weak acids or bases.
So we can say that a pH neutral product is important for lowering the risk of injuries when it comes in contact with the human skin, but that's about it. Being pH low or high doesn't increase it being less LSP-safe.
A good example here is Dawn soap. This is pH neutral, so it is gently to the skin, but kills grease with ease...
So I decided this was up for a test

I decided to test it with real waxes, sealants and AIO.
Later I plan on adding some tests with different snow foams and shampoo with pure carnauba flakes...
For this test, following products were used:
Wolf's Chemicals Full Moon, Wolf Moon and Quickie
Poorboys World EX-P
Autoglym SRP
Meguiars Dark Wax
Turtle wax Nano Tech and Natural Extracts
Commandant Cream wax
I tried including some strong waxes and some “ weaker” ones from OTC ( borrowed from the neighbour, who told me to try them a few times


These were all applied like this on all 4 door of the car.

The Test
The surface was sprayed with water to see the initial beading of the wax.
Then it was covered in foam and left to dwell for 10 minutes, rinsed down and beading was inspected again.
We did this 3 times and came up with the following results:
Full Moon:




Ex-P:




Dark Wax:




Turtle Wax Nano Tech:




SRP:




Wolf Moon:



