5 Myths About Truck Wash Chemicals That Are Costing You Money

A lot of what fleets and wash operators "know" about wash chemicals gets passed down informally — from a previous employer, an old supplier, or just how things have always been done at a facility. Some of it holds up. Some of it is outdated or just wrong, and it's quietly costing money every time a truck goes through the bay. Here are five of the most common myths we hear.

Myth 1: "A Stronger Dilution Always Cleans Better"

Using less water and more concentrate than the manufacturer recommends feels like it should mean a more powerful, more effective wash. In practice, over-concentrated chemical often doesn't clean meaningfully better — most formulations are engineered to perform at their tested dilution ratio, and going stronger mostly means you're burning through product faster without a proportional cleaning improvement. It can also leave more residue behind, requiring more rinse water to fully remove. Our dilution and draw rate guide walks through calculating your actual cost per wash so you can see this trade-off in real numbers.

Myth 2: "Cheaper Soap Saves Money"

Comparing products by price per gallon or per drum alone is misleading. A cheaper concentrate often requires a stronger dilution ratio to perform acceptably, which can make it more expensive per wash than a pricier product used at a lighter dilution. The only real comparison is cost per wash, calculated from dilution ratio and draw rate together — not the sticker price on the container. See our truck wash soap vs. car wash soap comparison for a related example of this same mistake.

Myth 3: "All Truck Wash Soap Is Basically the Same"

This myth leads fleets to buy on price alone, which works until it doesn't — usually when a formulation that wasn't built for aluminum etches a trailer, or a product not tested for discharge compliance creates a wastewater problem. Formulations genuinely differ in degreasing strength, pH, surface compatibility, and biodegradability, and those differences matter more as soil loads and surface materials get more demanding. These factors heavily influence a soaps performance on polished aluminum. 

Myth 4: "If It Foams a Lot, It's Working"

Foam height is mostly a function of the foaming agents in a formulation, not a direct measure of cleaning power. Some highly effective degreasers produce relatively little foam, while some heavily-foaming products are doing more to look impressive than to actually lift grease and grime. Foam has real functional value — it improves dwell time and surface coverage — but it isn't itself a cleaning-strength indicator, and judging a product by foam alone can lead to picking a less effective option.

Myth 5: "Water Reclaim Systems Never Pay for Themselves"

This belief often comes from outdated cost assumptions or a bad experience with an undersized or poorly matched system. For operations with meaningful wash volume and real water/sewer costs, reclaim systems frequently do pay for themselves within a few years — the key is running the numbers on your own facility rather than assuming the answer. Our water reclaim ROI guide shows exactly how to calculate it.

The Common Thread

Most of these myths persist because they sound intuitive — stronger must mean better, cheaper must mean cheaper overall, foam must mean cleaning power. The fix in every case is the same: run the actual numbers for your operation instead of relying on assumptions, whether that's cost per wash, water savings, or real-world cleaning performance on your specific surfaces and soil loads.

Want a second opinion on your current chemical program? Contact the Image Wash Products support team and we'll help you evaluate what's actually working.