Priced as of May 6, 2026
4.7(3,960 ratings)Subscribe & Save: $26.31 (5% off)Buy on AmazonAs an Amazon Associate and affiliate partner, CarCareTruth earns from qualifying purchases. Full disclosure
Prices may varyCarCareTruth's Analysis
Last reviewed 2026-05-07
TL;DR Meguiar's professional-line concentrate that shops and serious detailers have trusted for years. Strong dilution economy — one gallon at 10:1 makes over ten gallons of working solution — but the alkaline chemistry means more surface-safety caveats than pH-neutral alternatives. Use the right dilution for the right surface.
What it is and how it performs
D101 is a concentrate, not ready-to-use. That distinction matters: at 10:1 dilution it tackles dashboard film, door-panel grime, door jambs, and light engine bay buildup in one pass. At 4:1 it handles stubborn stains, heavily soiled fabric seats, and exterior cleaning tasks. At 20:1 it's gentle enough for carpet extraction pre-treatment. The sodium metasilicate gives it real alkaline cleaning power — more aggressive than pH-neutral APCs like Nonsense — but that alkalinity comes with trade-offs: approach wax, some sealants, and unprotected leather with the correct dilution (10:1 or weaker) and always condition leather afterward. The dilution economy is the product's biggest practical advantage. One gallon replaces dozens of 16 oz RTU bottles.
Who should buy this — and who should skip it
Buy it if you detail multiple vehicles, run a shop, or want a single product that handles the full range of cleaning tasks through dilution adjustment. The value per-wash session is unmatched in the professional-line APC segment. Skip it if you want a pour-and-spray surface that's safe on every surface without checking dilution — for that, a pH-neutral RTU APC is less hassle and carries fewer surface-safety caveats.
Safety and environmental impact
The concentrate carries a WARNING signal word with H315 (skin irritation) and H319 (serious eye irritation) at working-solution strength — both are real chemistry signals from the sodium metasilicate and glycol ether co-solvent. Gloves and safety glasses are warranted when handling at working dilution, especially when spraying in enclosed spaces. The pH 13 concentrate requires the same attention during dilution — pour concentrate into water (not the reverse) to control splashing. At 10:1 working solution, the formula poses no inhalation hazard for normal spray use. No Prop 65 warning; no PFAS. The formula contains alpha-olefin sulfonate, which is an aquatic toxicant — discard microfibers and rinse rags in a wastewater-connected sink, not directly into storm drains.
Frequently asked questions
What dilution should I use for interior cleaning?▾
Meguiar's recommends 10:1 (10 parts water to 1 part D101) for medium-strength general interior cleaning — dashboards, door panels, vinyl, plastic trim. Use 4:1 for heavy soiling, stubborn stains, and wheel wells. Dilute to 20:1 for fabric seats and carpet where residue after extraction matters. These ratios appear on the product label and are confirmed by r/AutoDetailing and Autogeek dilution threads.
Is D101 safe on leather?▾
At 10:1 or weaker dilution, the community broadly confirms D101 safe on leather for cleaning — follow with a leather conditioner after cleaning, since the alkaline formula can dry leather. At stronger dilutions (4:1 or full strength), community reports on Autogeek note dehydration risk on unprotected leather. D101 is not a leather conditioner — use the appropriate dilution and always condition afterward.
Is D101 safe on wax or sealant?▾
At 10:1 working dilution, community threads confirm D101 does not aggressively strip wax or sealant from exterior paint. At 4:1 or undiluted, the alkaline pH can degrade some wax layers. For ceramic-coated paint, dilute to 10:1 or weaker — multiple r/AutoDetailing threads recommend this as a safe ratio for maintaining coating hydrophobics.
Why does the concentrate label say DANGER but the working solution seems mild?▾
The DANGER warning on the concentrate label comes from sodium metasilicate at 1-5%, which is H314 (causes skin burns) at concentrate strength due to the pH 13 chemistry. The SDS classify this product at working dilution (10:1), where pH drops to approximately 11-11.5 and the classification steps down to H315 (skin irritation) and H319 (eye irritation). The rubric for this site scores health at working-solution chemistry per the concentrate-handling rule.
How does D101 compare to RTU APCs like Nonsense?▾
D101 is a concentrate with substantially better dilution economy — one gallon at 10:1 yields over 10 gallons of working solution. It's more aggressive than RTU pH-neutral APCs (like Nonsense) on heavy soiling but carries more surface-safety caveats on wax, some sealants, and leather at stronger dilutions. For weekly light maintenance cleaning, pH-neutral RTU APCs are more convenient; for deep cleaning before paint correction or detail prep, D101 at 10:1 is the more practical choice.
From the manufacturer
Marketing copy from Meguiar's, via Amazon. Not editorial.
- •Ideal for reconditioning most interior surfaces
- •Active foaming action lifts dirt
- •Fabric softeners enhance luxurious results
- •Ideal for reconditioning all interior surfaces
Weekly pick
One product, one safety verdict, every week. No spam.
Manufacturer specifications
- Brand
- Meguiar's
- Item Form
- Liquid
- Scent
- Bluebell
- Specific Uses For Product
- Carpet, Upholstery
- Material Feature
- Liquid
- Surface Recommendation
- Carpet,Fabric
- Special Features
- Ideal for reconditioning most interior surfaces
- Contains Liquid Contents?
- Yes
- Brand Name
- Meguiar's
- Global Trade Identification Number
- 00070382016432
- Manufacturer
- Meguiar's
- UPC
- 070382201012 070382016432 844926034868
More from Meguiar's
More in All Purpose Cleaner
Simple Green
Industrial Cleaner & Degreaser
CCT 8.1 · RecommendedHealth 10.0
Optimum
Power Clean
CCT 7.9 · RecommendedHealth 9.2
Chemical Guys
Nonsense Colorless & Odorless All Surface Cleaner
CCT 7.6 · RecommendedHealth 8.8
Purple Power
Industrial Strength Cleaner and Degreaser
CCT 7.2 · RecommendedHealth 8.7
As an Amazon Associate and affiliate partner, CarCareTruth earns from qualifying purchases. Full disclosure
Community
0 commentsShare how you use this product
Add a tip, ask a question, or rate it on effectiveness and health impact.
Sign in to commentNew here? Create a free account.
Top Amazon review
↗External — Amazon's most-helpful review for context.
Excellent product with a wide array of uses
My wife's 2011 car has light colored leather and it's dingy looking. I tried every leather cleaner on the market and nothing really worked. I didn't want to damage the existing leather by being too aggressive with any cleaning and I was sort of stuck not knowing how to proceed.I did significant research on cleaning leather car upholstery and came across several articles from professional auto detailers who said that contemporary car seat leathers (the past ten years of so) are actually treated with what amounts to a sprayed on vinyl/plastic protectant that is actually very tough. I also talked to my collision guy who is Mercedes, Ferrari and Lamborghini repair certified and he said the same thing and he recommended the Meguiars all purpose cleaner.I mixed it 4:1 per the directions for "heavy cleaning" and carefully went to work with a small , soft scrub brush in an area on the front of the seat that was very dirty from all the contact with legs but out of sight in case the Meguiars product was too aggressive. The Meguiars product worked quickly and I was surprised to see the dingy leather quickly return to an ivory white/cream color with medium effort. I wiped the excess product off with a soft cotton towel and treated it with a cream leather product and the seats looked like new.It also worked on cleaning my stainless steel grill hood. Remarkable product.