In-depth reviews Our take on each jug
We weighed every concentrate against the same five criteria — power, dilution versatility, surface safety, RTU value, and availability. Here's how each earns garage shelf space.
1 
P&S Enviro-Clean
Best Overall
Enviro-Clean is the answer when working detailers are asked which single jug they'd keep: a ChemTROL-line concentrate whose label runs 4:1 for engines, door jambs, and wheel wells, 10:1 for carpet pre-treatment, and 20:1 for light interior work — with full strength sanctioned for the genuinely tough spots. One $25 gallon becomes a whole shelf of task-mixed sprayers.
The chemistry earns the 'Enviro' name honestly enough — citrus derivatives and biodegradable surfactants — while cleaning like the pro tool it is, and its signature virtue shows at the rinse: it lets go of surfaces cleanly, leaving less residue film than nearly anything comparable. That's why it dominates Ask-a-Pro-style recommendations year after year.
P&S sells primarily through distributors, so shop it at the specialist retailers (Car Supplies Warehouse had gallons in stock at our check) rather than the brand's own cart. Mix by the label, mark your bottles, and this is the APC benchmark.
Check Price: P&S Enviro-Clean →
2 
Meguiar's All Purpose Cleaner D101
Best Classic Pro Staple
D101 is the APC that raised generations of detailers: the flagship cleaner of Meguiar's professional Detailer line, mixed 10:1 for general and interior work or 4:1 for tires, engine bays, and abused upholstery, its foaming action lifting soil the way body shops have relied on since before YouTube detailing existed. A $25 gallon yields ten-plus gallons of working cleaner.
The systemization is very Meguiar's: an official pre-labeled secondary bottle (D20101) carries the dilution chart on its flank, and availability spans Meguiar's Direct to Walmart. It's the concentrate that made concentrate-thinking normal.
One label line deserves an asterisk from our research: 'even leather' appears in the marketing, but detailer practice keeps D101 off leather or at the leanest mixes only — our leather-care ranking has the dedicated tools. Everywhere else on the car, the old pro is still the standard.
Check Price: Meguiar's All Purpose Cleaner D101 →
3 
Koch-Chemie Green Star
Most Concentrated
Green Star is what German professional car care sounds like: a strongly alkaline universal cleaner (around pH 12.5 in concentrate) whose official chart runs 5:1-to-30:1 on vehicles and out to 120:1 on workshop floors — concentration so deep that a $16 liter competes with rivals' gallons. Truck fleets and detailing studios across Europe run on it.
The engineering detail that separates it from generic alkaline degreasers, confirmed on the official spec: special corrosion inhibitors that make it compatible with sensitive substrates like anodized aluminum — the exact surfaces most strong APCs warn you off. Phosphate-, solvent-, and NTA-free chemistry keeps the fleet-compliance boxes ticked (VDA Class A at a five-minute max dwell).
Respect it accordingly: this is not a gentle product — never let it dry, keep it off hot panels, cut it to at least 20:1 anywhere near leather (better: don't), and expect strong mixes to strip waxes as thoroughly as they strip grime. Handled by the label, it's the strongest value-per-molecule on this page.
Check Price: Koch-Chemie Green Star →
4 
Optimum Power Clean
Best Paint-Safe Prep
Power Clean carries the Optimum signature — polymer chemistry doing jobs surfactants usually brute-force — and its distinguishing credential is right on the label: the maker rates it safe on painted exterior surfaces at 3:1, making it the rare APC that serves as a legitimate pre-polish and pre-coating cleaner rather than a keep-off-the-paint utility. Wheels, tires, engines, and bug-tar duty run full strength to 3:1; interiors around 5:1.
It emulsifies oily grime — brake dust film, bugs, dressing residue — with an ease that explains its enthusiast following, and it slots naturally into the Opti-Coat prep workflow it was born beside.
Two law-of-the-label items from our verification: never let it dry on any surface, glass above all, and keep it off panels hotter than 120°F. Mind also the ratio notation — we state everything water-to-product — and channel stock wobbles at the brand's own store while retailers stay supplied. A precision tool wearing an all-purpose name.
Check Price: Optimum Power Clean →
5 
CarPro MultiX
Best for Coated Cars
MultiX is the APC as the coating world sees it: not a grime hammer but a precision maintenance cleaner, run lean — around 20:1 for general work, richer only for heavy soil, and out to 100:1 through a foam lance for pre-wash duty on coated cars. Installers use it for pad cleaning and tar streaks inside the CarPro ecosystem it was built to serve.
The label discipline is characteristically strict, and our check flagged where sources disagree: the global page prohibits undiluted use (we side with the label over looser retailer copy), bans it from leather outright, and warns off bare, polished, and anodized metals. Test first, always — CarPro assumes a careful user.
Judged as a general degreaser it's mid-pack by design; judged as the maintenance APC for a ceramic-coated garage, it's the purpose-built pick. Buy it for the workflow, not the muscle.
Check Price: CarPro MultiX →
6 
Adam's All Purpose Cleaner
Best Consumer-Friendly
Adam's APC translates the pro-concentrate category for people who don't own labeled spray-bottle arsenals: an ultra-concentrated citrus degreaser that runs full strength on wheels, tires, engine bays, and tar, dilutes down for delicate duty, and arrives with the hand-holding — clear use notes, videos, and the money-back guarantee — the ChemTROL jugs assume you don't need.
The label's care notes are sensible and worth repeating: rinse promptly to avoid spotting, follow delicate surfaces with a damp microfiber, and favor cool panels and shade for any long dwell. The gallon-plus-free-16-ounce bundles are the value entry.
One honesty note from our verification: unlike Meguiar's or P&S, Adam's publishes no numeric dilution chart — it's full-strength-to-diluted by judgment, which suits its audience and slightly caps its versatility score. Watch the SKU too: the separate 'All Purpose Interior Cleaner' at parts stores is a different product.
Check Price: Adam's All Purpose Cleaner →
7 
Chemical Guys All Clean+
Most Popular
All Clean+ is how most enthusiasts meet the APC concept: a citrus concentrate on every retail shelf, diluting about 10:1 for exterior work and 20:1 for interiors, with odor-eliminating enzymes riding along for cabin duty. As the first jug in a growing detailing habit, its approachability is the product.
Position it as Chemical Guys itself does — medium-strength: proper heavy degreasing belongs to the brand's stronger Signature Series Orange, and the gallon's $52 list wants a coupon (they're frequent) to compete with the pro jugs above. Our check also notes the standard CG stock dance: official-store sold-out flags while Amazon, Walmart, and Target stay deep — current product, fluid channel.
The 'natural' framing earns one raised eyebrow given the standard Prop 65 disclosure on US listings — a category-wide reality worth knowing, not a scandal. As the gateway APC, it does the welcoming genuinely well.
Check Price: Chemical Guys All Clean+ →