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What does the kit do?

The kit tests for the presence of oil in petrol. It is used to prove to a customer that their repair is not under warranty or that they have to pay for repairs under a rental agreement.
Picture of open kit box

Why is the 2-stroke oil/gasoline mixture so important?

In a four-stroke engine, the crankcase is completely separate from the combustion chamber, so you can fill the crankcase with oil to lubricate the crankshaft bearings, piston and cylinder wall.

  But in a 2-stroke engine?

The crankcase serves as a pressurization chamber to force air/fuel into the cylinder. The piston acts as a slide valve. This ingenious configuration means that the 2-stroke engine, has a much better power-to-weight, than a four-stroke. However it becomes imperative that a special oil is mixed with the fuel to lubricate the crankshaft, connecting rod and cylinder walls. If you forget, or your customers forgets to mix in the oil, the engine will seize!

The problem is that although the mechanic will know from experience that an engine has seized from lack of oil, the customer may not admit it! This is when the kit comes into its own.

Contents of kit
  1. Instructions.

  2. Five disposable vials containing a precise quantity of reactant.

  3. Five deposable pipettes.

When fuel/oil is added to the reactant, the mixture will remain clear if no oil is present. The mixture will turn opaque if oil is present in sufficient quantity.

Familiarity with results will enable the user to determine the ratio of oil/petrol. It is recommended that new users test a known sample to use as a reference. This only need be done once for although the sample will gradually clear, all that is needed is to agitate the vial to restore the effect.

Each test is disposable. Each vial & pipette should only be used once because of possible contamination.

Dispose of liquid with your waste oil. Recycle glass & plastic.

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