PRACTICAL GUIDES • PRODUCT KNOW-HOW

Fleet Wash SupplyLearning Center

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RTU Mixing Calculator

Water and concentrate amounts in gallons
Water : concentrateWaterConcentrate
3:13.751.25
4:14.01.0
5:14.1670.833

Amounts are rounded to 0.001 gallon. Choose one ratio for each chemical and keep Step 1 and Step 2 in separate containers. Your injector dilutes this RTU further during downstreaming.

Injector Dilution Calculator

:1

A 10:1 draw rate means 10 parts pressure-washer water to 1 part RTU drawn from the tank.

Final dilution is the mix coming out of the wand and hitting the truck. Enter the target recommended for your product.

Enter a target final dilution to calculate your RTU mix.

Use your measured water-to-RTU draw rate. Amounts are rounded to 0.001 gallon; check product and equipment instructions before using the calculated mix.

New to two-stepping? Start here

These four guides cover the basics: understand the process, choose chemicals, choose equipment, and prepare your RTU.

  1. Two-Stepping Basics
  2. Polish-Safe vs. Non-Polish-Safe
  3. EZ 2-Step vs. Pro 2-Step
  4. Chemical Dilution Guide

Then use the other guides for the question or problem you’re working on.

Browse the guides

Read guide

Two-Stepping Basics

Learn how two-step truck washing works, which chemical bundle fits your surfaces, and why Step 1 and Step 2 must stay separate.

 Read guide

Polish-Safe vs. Non-Polish-Safe

Choose between Venom + Viper and Bullet + Trigger based on polished aluminum, surface compatibility, and the buildup you need to remove.

 Read guide

Pre-Treating Bugs & Problem Areas

Use Step 2 to give bug-heavy mirrors, visors, and bumpers extra attention before the full two-step wash.

 Read guide

When to Brush

Brush after applying Step 2 and before rinsing. Learn how pre-treatment and targeted brushing fit into the two-step sequence.

 Read guide

Truck Still Dirty? Start Here

Check chemical draw, dilution, application, and rinsing before reaching for stronger soap or changing your two-step wash setup.

 Read guide

Calculate Your Cost per Wash

Calculate RTU yield, cost per prepared gallon, and combined Step 1 and Step 2 chemical cost using measured usage.