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The deposit formation in the intake system of passenger cars due to cracked components in gasoline leads to loss in fuel economy, increase in emissions and poor driveability problems. Use of multifunctional additives is the most cost effective means worldwide for controlling these deposits Worldwide, there are many test methods used (mostly in house tests) to evaluate the efficacy of the deposit control additives but most of them are based on multi cylinder gasoline engines which are quite cumbersome and expensive. For this reason, it was decided to develop a less expensive, small scale test method based on a modern technology gasoline engine using Honda generator of 5.5 KW capacity. A cyclic test procedure of 80 hours duration has been developed. Several tests were conducted in two generators with different fuels to establish the repeatability and the reproducibility of the test method.