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Please read instructions and safety information prior to using product. Introduction  Oil breakdown causes sludge which increases wear, acids and corrosion, shortening equipment life. All
modern oils contain additives that inhibit breakdown. As these additives are depleted, sludge is formed.
ONE-Drop measures the amount of sludge in the oil.ONE-Drop provides quick and accurate visual confirmation that its time to change a lubricant. Proper fluid maintenance will help ensure performance, extend equipment service life, and reduce overall maintenance costs. When ONE-Drop results are saved and compared at regular intervals, oil change cycles can be determined for make and age of the vehicle, brand of oil, and driving habits, all of which affect oil degradation. Poor ONE-Drop ratings at low mileage can be an indicator of serious problems. General Procedures Sampling Method: Withdraw the engine or transmission dipstick and allow a generous drop to form on the end. Deposit the oil drop on the ONE-Drop Test Sheet by lightly touching the end of the dipstick on the medium. Leave the ONE-Drop test blotter in a horizontal position for a few minutes and then compare it to the reference chart. To evaluate oil condition, match each sample to the photographs. Backlighting samples enhances ONE-Drop results. Simply hold the ONE-Drop up to a light, or the sky. Repeated testing over time will increase the confidence level of your interpretation of the ONE-Drop. NOTE: ONE-Drop is designed as an aid in determining the condition of the oil. There is no guarantee expressed or implied against component failure. The equipment manufacturers recommended practices should always be followed. Gasoline Engine Oil Test   NEW - The sample is light in color and is absorbed by the test medium very quickly. GOOD - The oil has become slightly darker than the new oil. It is still well within the normal range for typical engine oil. No action is required other than testing again in about 1,000 miles. OK, Plan Change - This oil has become darker from the normal degradation of oil used in a gasoline engine. The dark brown, irregular ring that is being formed is a sure sign of degrading engine oil. The oil will still provide some protection, but an oil change should be scheduled as the degradation process will become much faster. Planning on when to change the oil should be based on how long (miles) it took to get to this point in the degradation cycle. BAD, Change - The darkness of this oil including the irregular oxidation ring, compared to earlier ONEDrop samples, is dramatic. Making sure that your oil never gets to this stage will save many dollars in needless repairs. This oil has gone beyond its useful life and needs to be changed immediately. Automatic Transmission Fluid (ATF) Test  NEW - The sample is light in color and is absorbed by the test medium very quickly. GOOD - The fluid has become slightly darker than the new oil. It is still well within the normal range for typical transmission fluid. No action is required other than testing again in about 10,000 miles. OK, Plan Change - This oil has become darker from the normal degradation of fluid in a transmission. Note the darker brown color as compared to the red new ATF. This is a sure sign of degrading fluid. The fluid will still provide protection but a fluid change should be scheduled as the degradation process will become much faster. Planning on when to change the fluid should be based on how long (miles) it took to get to this point in the degradation cycle. BAD, Change - The darkness of this oil including the dark outer oxidation ring compared to earlier ONE-Drop samples is dramatic. Making sure that your fluid never gets to this stage will save many dollars in needless repairs. This fluid has gone beyond its useful life and needs to be changed immediately. Differential (F&R), Manual Transmission & Transfer Case Test  NEW - The sample is light in color and is absorbed by the test medium very quickly. GOOD - The oil has become slightly darker than the new oil. It is still well within the normal range for typical gear oil. No action is required other than testing again in about 10,000 miles. OK, Plan Change - This oil has become darker from the normal degradation and wear debris. The gray to black color is iron wearing off of the parts. The oil will still provide protection but an oil change should be scheduled as the degradation and wear process will become much faster. Planning on when to change the oil should be based on how long (miles) it took to get to this point in the degradation cycle. BAD, Change - The darkness of this oil and the black/gray color indicate there is severe wear tacking place. Making sure that your oil never gets to this stage will save many dollars in needless repairs. This fluid has gone beyond its useful life and needs to be changed immediately.
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